Scenario of the Day of Knowledge “Young Scientists. Scientific children's parties - entertainment with benefits for the health and development of your child

For her 11th birthday, Leah “ordered” a scientific birthday. The name came immediately - “NIICHAVO” (according to the Strugatskys), but the content took a little longer.

The invitations were issued in the form of a standard booklet advertising a private company ( ready-made template). On the cover is the inscription: “ NIICHAVO. Everything will be all right, or maybe all right, but for sure it will be!" There was a lot of information inside (still 3 sheets!).

1. Scientific
Research
Institute
Extremely
Current
Experiences
NIICHAVO is a cool laboratory for curious people.
The activity is based on the question: “What will happen if...”

2. NIICHAVO laboratory invites you **.**.2011 to the Day open doors. You will have the opportunity to conduct a couple of extremely relevant experiments, arrange an explosive experiment (one) and learn a lot of interesting and instructive things.

3. Starts at 12.00.
Clearing debris - 15.00
Venue: NIICHAVO
Address
Tel.

Carrying out

All arrivals were given badges with the inscription “NIICHAVO”.

Conducted a brief safety briefing (follow instructions strictly, do not taste anything, make every effort and do not destroy the apartment).

Then there was a test of intelligence.

The children were asked to cut a strip of paper into 3 parts, making only 1 cut.

Everyone did it surprisingly easily (it took me longer to think about it) - everyone just folded the strip and “ chick!" Here are 3 parts for you.

After this, the practical part began.

I would like to note that the children were not interested in the scientific aspect of the experiment itself (tension, density, etc.), they were exclusively interested in the effect.

They are 11 years old, they study neither physics nor chemistry, and have little interest in the laws of the universe. But they liked mixing and adding so much that a month later, parents were still saying that their children demanded that they be provided with the necessary ingredients at home..

Experience No. 1

Pour water into the glass all the way to the rim. Cover the top with thin cardboard (part of a cereal box is ideal) and, holding the paper with your palm, quickly turn the glass over. Now remove your palm.

Will water spill out of the glass? What if there is less water?

How much water does it take for it to pour out?

We compare and discuss the results.

Experience No. 2

Pour whole milk into a plate.

Carefully apply a drop of liquid food coloring different color to the middle.

Dip a cotton swab into the dishwashing liquid and then gently touch the milk.

Experience No. 3

Inflate and deflate the balloons in advance.

At the party, pour Coca-Cola into each balloon, tie the balloon and shake it.

What will happen? Why?

Experience No. 4

Pour vegetable oil in a tall glass with a stem.

And put a little alcohol solution in a bowl (you can use vodka). Take a pipette and carefully add the solution drop by drop into the oil. What's happening? How long can the solution be added?

Experience No. 5

Pour some water (preferably colored) into a plate.

Place a coin and ask who can take the coin without getting their hands wet.

After listening to the versions, say that you can do it.

Place a tea (heating) candle in a plate and light it.

Cover the candle with a glass so that it touches the bottom of the plate.

The water will be sucked into the glass and you will easily remove the coin without getting your hands wet.

Give everyone a chance to try.

Experience No. 6

I copied this experience from my script for Harry Potter.

There were a lot of questions at that time, so I’ll describe the preparation in more detail.

Take red cabbage (and only red cabbage), cut.

Add to boiling water (ideally distilled, but you can also simply filter it). After a minute, remove from heat and let stand for 30 minutes.

Strain.

Pour the water into different vessels. Add whatever comes to mind.

Lemon juice , vinegar will turn the water bright red.

Try adding Orange juice And spoiled milk . Add to another container alkali - soda, washing powder , liquid bath cleaner.

Soda supposedly makes the solution blue, and ammonia- green, but...

Imagine, everyone’s solutions turned out different! Inexplicable, but cool.

Experience No. 7

Take wooden, plastic and metal spoons and a straw.

Attach a bead to each spoon using a piece of butter at the same height. Place the spoons in a measuring cup and add about 7cm of hot water.

What will happen? Why?

Experience No. 8

Take a small piece of cardboard and, holding it in front of a lit candle, blow it.

What will happen to the flame?

Bring the ends of the cardboard together and secure with paper clips without bending the middle.

Place the paper clips on the candle and blow again.

What happens to the flame now?

Experience No. 9

Pour into a large glass one by one sweet syrup, glycerol, colored water, vegetable oil, tinted alcohol.

Pour carefully around the rim of the glass and let the liquid settle before adding more.

What happened?

« Beauty!“- one boy said dreamily.

Experience No. 10

It is better to do this experiment last - it is very popular, takes a lot of time and requires a lot of cleanup after.

Everyone prepares their own guu.

To do this, you need to mix starch and cold water (400 grams and one and a half cups, but it’s better to experiment by adding water a little at a time). Then add dye and...

Some people start having fun (children), while others watch what is happening in horror (parents). I hasten to reassure you - everything can be cleaned perfectly with a vacuum cleaner (from the carpet) and a rag (from oilcloth).

Goo is neither a liquid nor a solid.

You can make balls out of it, and if you put the ball on your palm, the goo turns into liquid and flows. It was the hit of the evening.

And then there was cake and a discussion of the results. The children were delighted.

The best compliment was the phrase “ Leah, it cost me a lot to come here, but it was worth it!" The only negative is that the photographs are not very attractive: well, they are flasks and flasks, and the moment of “transformation” itself is very difficult to capture.

http://www.7ya.ru/article/Nauchnyj-den-rozhdeniya/#null


Visiting Archimedes

(birthday scenario for growing children)

My daughter turned 10 this year, and this is the age when pirates, searching for maps and treasure in a chest are no longer inspiring. Therefore, we decided to focus on an “adult” topic - natural science experiments and experiments. The key character was Archimedes, he led us along the path of understanding the secrets of the world around us.

I have always been fascinated by the idea of ​​Tanya Lavrenova’s holiday “The Mystery of the Montgolfier Brothers,” so our scientific research smoothly turned to the task of lifting off the ground using a balloon. I thought for a long time and painfully about how to connect Archimedes with aeronautics, until I discovered in one encyclopedia magic words: « The lifting force of a balloon is created by gas (or heated air) enclosed in the shell with a density less than the density of the surrounding air (according to Archimedes' law)" And everything immediately fell into place.

And as a form we used Tatyana’s idea from “The Day of Mysteries and Tests” and her outstanding computer program.

So many thanks to both Tatyanas for their ideas and inspiration!

In total, 10 children took part in the holiday, of which 8 were 10 years old, one was a little older and one was a couple of years younger. This time we were at home (and not outdoors, as usual), because... They constantly used all kinds of equipment, and the experiments required “home” conditions.

Guests were given stylized invitations in advance with a manly Archimedean profile on the cover.

We started the holiday by watching the cartoon “Kolya, Olya and Archimedes” - a kind of Soviet history about the pioneers' journey to Ancient world and practical comprehension of Archimedes' law. In our case, it was an introduction to the topic.

Using Movie Maker, I inserted the credits at the end:

"Attention! Insert paper into the printer immediately! You have a letter from Archimedes."

The letter was, of course, sent to the printer in advance, so as soon as the paper was inserted, the printer printed the message. I will not give it in full, but its essence boiled down to the fact that Archimedes, from the depths of centuries, addresses children and invites them into the world of physical laws. He will communicate with them using a computer, for which they need to find the “Archimedes” file on the desktop and launch it (the same program by Tatyana P.). And as an assistant, he sends to them his student and friend Doctor Grigorius (our dad Grisha, wrapped in a white sheet, a real physicist).

The children quickly found the file and launched the program (of course, with changes previously made to it). The greeting sounded like this:

« Today you will find experiments, tasks, experiments and tests. After each experiment you will have to answer my question and enter the answer into the computer. If it is correct, then you will be able to receive the next task. You will enter the codes one by one, the birthday girl begins. But first I must test your intelligence and erudition.
You are ready? If yes, then press any key».

The guys press the key and receive the first task:

1. Find envelope No. 1 (Where? Indicate the secret place). Read the statements and guess whether they are true or not. For each correct answer ("yes" or "no") you will learn one letter. Guess which country and its capital are hidden in the resulting sentence, and enter them in capital Russian letters separated by a space (first the country, then the city).

Envelope No. 1

It contains a list of statements. The assignment was borrowed from Tatyana P., where you can see the questions and the correct answers.

For this test I prepared a special form.

The required sentence was recorded on large sheet pencil (thin so as not to show through). Each letter was covered with two leaves. The number of the question was written on the top one, and the correct answer (“yes” or “no”) was written on the second one (again, thinly).

That is, we read a statement like:

« Children can hear higher pitched sounds than adults».

The guys discussed whether it was true or not and came up with a group decision.

We picked up the first piece of paper and looked at what was written on it - “yes” or “no”. If their answer was correct, we raised the second piece of paper, under which there was a letter.

If the answer was incorrect, but the letter remained closed.

In our case, it was not possible to open all the letters (although it should be noted that the children gave more correct answers the first time than I did when I first read these questions), but there were enough of them to guess the remaining ones.

Our proposal was: “ Franz and I made a bet, Jacques is a witness»

In it we found the country - France and the capital - Paris. These are “clues” for the future (since the history of aeronautics begins in France).

We enter the code words into the computer and move on to the next task.

2. Well done, you did a great job!

Now find envelope No. 2 (indicate the place where to look). There you will find descriptions of several physical experiments. Everything you need is on the table. Read the descriptions of the experiments carefully and only then carry out them.

Don't forget to invite Doctor Grigorius - he will be your faithful assistant.

Discuss how this happens, thanks to what? Enter this word, this is the code.

Despite the simplicity of all the proposed experiments, I would advise you to first try to carry them out yourself, since they all have some nuances.

Before each description there was a warning that you must first carefully read the description of the experiment, and only then begin to carry it out.

All necessary equipment collected on a small table.

From there, children take what they need to carry out this experiment.

Envelope No. 2

Experience 1.

Equipment - glass, water bottle, thick paper, basin

Take a glass, a bottle of water and a piece of construction paper.

Pour water into the glass all the way to the rim. Cover the glass with a piece of thick paper and, holding the paper with your palm, quickly turn the glass upside down.

Now remove your palm. Will water spill out of the glass?

The experiment must be carried out over the pelvis.

If the water is poured to the top, the paper is thick enough and pressed well, then the water does not spill out, and the sheet seems to stick to the edge of the glass.

Experience 2.

Equipment - bowl, colored water, cork, glass

Take a tall glass and a bowl. Pour colored water into a bowl (so that the water level is about 5-6 cm), put a cork in it and place a glass turned upside down directly on the cork. Is there the same level of water under the glass as in the plate?

This experience is called " diving bell".

If the glass is high enough and not too much water is poured, then there is no water left under the glass at all; the cork lies at the bottom of the bowl. And outside the glass the level rises slightly. The water can be slightly tinted (for example, with potassium permanganate) to make the experiment look more impressive. But you can also use ordinary clear water.

Experience 3.

Equipment - plate, water, candle, lighter

Pour some water (can be tinted) into a plate. Carefully place a candle (“tea” candle, in a metal mold) into the plate and light it. Cover the candle with the glass so that it touches the bottom of the plate. What will happen to the water?

When the candle goes out, water will be sucked into the glass. To make the experience more impressive, it is better to pour just a little water. Then it will all be absorbed into the glass, and the plate outside the glass will be dry. If you take not a plate, but a small saucer, then it will generally “stick” to the glass, and the glass can be lifted along with the saucer.

Experience 4.

Equipment - transparent water bottle, stopper, pipette

Fill the bottle with water, leaving two to three millimeters to the edge of the neck.

Take a pipette, fill it with some water and drop it into the neck of the bottle.

Its upper rubber end should be at or slightly above the water level in the bottle. In this case, you need to ensure that with a slight push with your finger the pipette sinks, and then slowly floats up on its own.

Now close the cap and squeeze the sides of the bottle, hold for a while. What will happen to the pipette?

When you squeeze the bottle, the pipette will sink to the bottom.

For this experiment, it is very important to control how much water is put into the pipette. If there is too little, you will need to squeeze the bottle very hard; the child’s strength will not be enough for this. If there is more water in the pipette, it is enough to squeeze the bottle just a little, and the experiment looks much more impressive.

After all the experiments, we discuss the action of what physical force they illustrated for us. It should be noted that the children turned out to be quite “advanced” and almost did not need the help of Dr. Grigorius.

We enter the code word into the computer - pressure. We receive the following task:

3. Find envelope No. 3 (location). Conduct experiments.

What force does this happen? Enter a code.

Envelope No. 3

Experience 1.

Equipment - plate, water, strip of paper, scissors, washing up liquid

Pour clean water into a plate.

Take scissors and, holding a narrow strip of paper over the plate, cut off small squares from it, trying to do this so that the pieces falling into the water are located on the water in a ring in the middle of the plate and do not touch each other or the edges of the plate.

Take soap (or dishwashing liquid) and place one drop in the center of the plate. What will happen to the papers?

They will quickly scatter to the edges of the plate.

Experience 2.

Equipment - plate, water, blade, needle, buttons, magnet

Can metal float on water?

Very carefully, take the razor blade (it's very sharp!) and place it on the surface of the water. What happened?

Try weighing down the blade by carefully placing a needle and 1-2 buttons on it. Try placing a needle on the water. What happens if you magnetize it first?

If the blade is placed carefully on the water, it will not sink, but will float on the surface of the water. When you weight it down (with a needle and buttons), you can see how it is pressed a little into the water, but still does not sink.

If you first magnetize the needle, you get a compass.

You can also try moving a blade or needle through the water with a magnet.

Experience 3.

Equipment - glass, sunflower oil, alcohol mixture, pipette, bowl

Pour sunflower oil into a glass. Pour some alcohol solution into a bowl. Take a pipette and carefully, drop by drop, introduce the solution into the oil. What's happening to him? What form does the liquid take? Why? Continue adding solution until... Until what happens?

I took regular vodka, the alcohol content was sufficient. You can take rubbing alcohol and dilute it with water.

The alcohol solution is collected in a beautiful ball that hangs near the surface.

When it gets heavy enough, it sinks nicely and smoothly to the bottom.

For this experiment, it is better to take not a glass, but a tall glass with a stem.

This will make it easier to look from below to see the ball.

We discuss how it all works out - the pieces of paper scatter, the blade floats, the alcohol collects into a ball. The key phenomenon is surface tension.

Enter the word tension, go to the next level.

4. It seems, my friends, that you are a little tired.

You need to eat a little and rest. Eat the treat and write how you liked it. We make a snack (sandwiches, juice), write “yes”,

Let's move to the next level.

5. Find envelope No. 4 (location). Conduct experiments. What force does these experiments illustrate? Enter a code.

Envelope No. 4

Experience 1.

Equipment - 2 eggs (boiled and raw), plate

Scramble both eggs on a large plate. You see the eggs behave differently. How can you tell which one is boiled?

A boiled egg spins, but a raw egg does not.

Experience 2.

Equipment - glass, postcard, coin

Take a glass. Place a postcard on it, and a coin on the postcard.

Click sharply on the postcard.

What will happen to the coin? (She'll fall right into the glass)

What happens if you pull a postcard slowly?

(The coin will move with the card)

We discuss, introduce the word “friction”, move to the next level.

6. Find envelope No. 5 (location). Conduct experiments.

What changes in water, what is its characteristic? Enter a code.

Envelope No. 5

Experience 1.

Equipment - three jars, alcohol solution, salt, water, egg, ice

Take three containers.

Pour an alcohol solution into one (the strength of the vodka was not enough, you need a little more. You can use not alcohol, but the cheapest cologne); in the second - water; in the third - a salt solution.

Place an egg and a piece of ice in the first container (with an alcohol solution).

Transfer them to a second container (with saline solution),

and then to the third (with clean water).

What's happening to them? How to explain this?

In alcohol, both ice and egg sink, in salt both float, in water the egg sinks, but ice does not.

Experience 2.

Equipment - weighted wax ball, glass, salt, water, clear water bottle

Take a wax ball.

Place it in a container of water (the container should be about half full). The ball is a little weighted (it itself is the size of a large grape, it has 2-3 paper clips inside), so it sinks. Prepare a salt solution (dissolve the salt in a glass of water until it stops dissolving).

Add saturated salt solution little by little to the water and stir lightly. What happens to the ball?

He pops up. By adjusting the amount of water and saline solution, you can ensure that the ball hangs in the middle of the container.

We discuss experiments, introduce the word “density”. We get the last task:

7. Remember the basic law that I discovered and proved? A body immersed in a liquid or gas is subject to a buoyant force! For many centuries, people have tried to use this power to get off the ground and rise into the sky. What was the name of the first one? aircraft, on which a man rose into the air? Enter the name in capital letters.

Enter the word " balloon"(I deliberately did not take the “balloon”, because, firstly, it is too simple, and secondly, it is not entirely correct from a scientific point of view) and we receive a farewell message from Archimedes:

“Indeed, an aerostat (or a hot air balloon, as we used to call it) fulfilled a person’s dream of getting off the ground. I was not destined to see this with my own eyes, but I know for sure that it happened. Find the “Aerostat” file on your computer desktop and listen to the history of aeronautics and the first human flights, and at the same time remember about France, you may even be able to build your own balloon!

And I, Archimedes, say goodbye to you. I send you greetings from the distant past, I wish you new ones most interesting discoveries and all the best!"

In my search for information about balloons, I found an amazing resource in which the history of aeronautics is presented concisely, but very informatively, the text is easy to read and is accompanied by incredibly beautiful pictures.

This is the website of the Kyiv Aeronautical Society.

Be sure to scroll through all 9 pages!

Based on this article, I prepared a short presentation in Power Point.

There was a minimum of text (mostly pictures), I tried to tell the story myself and give the children all sorts of tasks along the way so that they wouldn’t get bored.

For example, when we reached the first passengers of the hot air balloon, 3 volunteers had to pantomime them (without sounds!), and the rest had to guess who it was (a ram, a rooster and a duck). And so on.

After the presentation, we set about building our own balloons (thanks again to Tanya Lavrenova for the idea!). But first it was necessary to make passengers.

We made rope men.

They are knitted quite simply from two ropes, one a little shorter (this is the base - the head and legs), the second - a little longer (these are the arms and body).

Or you could, for example, draw and cut out your portrait or mold passengers from plasticine.

Then we moved on to the baskets.

I bought small baskets (apparently flowerpots, about 12 cm in diameter) in advance (very inexpensively, 15 rubles each), and we tied strong threads of the same length to them.

I managed to find really huge balloons (about a meter in diameter), which we inflated with helium (we bought a balloon in advance, which is not a problem in Moscow).

First, the children divided into pairs, and each pair made one balloon. This was due not only to limited quantity gas (there simply wouldn’t be enough for 10 such balls), but it was also not easy to cope with alone.

Threads tied to baskets were attached to the balls with tape.

Attention! Under no circumstances should the adhesive tape be peeled off from the ball, because... it may burst. We just lost one balloon!

We put our passengers in the baskets, and also put notes in which on one side a wish was written for the birthday girl (voiced by the authors), and on the other - our own cherished wish (remained secret).

Then we went out into the street together and counted “one-two-three!” launched their balloons. And they watched their flight in the clouds for a long time - fortunately, the weather was clear.

It was, of course, a bit of a pity to release our works of art, but the helium from the balloons would still have evaporated within a day, and our beautiful balloons rushing into the sky would have turned into crumpled rags. And so we all - children, adults, and random passers-by - received a lot vivid impressions!

And at home there was a treat waiting for us - pizza and birthday cake.

By the way, the children made the pizza themselves.

Thus, we solved a common problem - when some guests arrive early, while others are late. While the holiday had not yet begun, we invited everyone who came to join in making pizza.

  • in which monetary settlements are not at all involved, will not be considered so
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    • The child must develop harmoniously, in addition to physical activity It is important to ensure the intellectual growth of the baby. At such a young age, any knowledge should come to the baby at game form, so the acquired knowledge is easier to assimilate and remember for a long time. The best way introduce children to the scientific world - order a chemical show for the holiday http://konfety.info/content/himicheskoe-shou. This scenario is rightfully considered universal, because it will harmoniously fit into a celebration of any theme.

    What is a chemistry show like?

    Depending on the theme of the celebration and the time of year, holiday agencies offer several exciting and original scenarios.

    New Year's science shows

    1. Around the world.

    Kids will get to know these natural phenomena, like fog and snow, they will learn about the properties of foam and smoke, for this on the New Year's super-express they will have to visit rainy England, mysterious India, warm Hawaii, Italy. On the journey, the children will be accompanied by a cheerful professor who will talk about the New Year traditions of each country.

    2. Detective adventure in New Year.

    On the eve of the holiday, a terrible event happened - Santa Claus's watch was stolen. The animator, who is also a detective, begins an investigation and cannot do without assistants. Children will get acquainted with the secrets of detective work: learn to develop invisible inscriptions, create an identikit, learn to disguise themselves competently, and prepare powder for removing fingerprints.

    Thanks to the well-coordinated work of the entire group, the clock will be found and the New Year, of course, will arrive on its due date.

    3. New Year's Fort Boyard.

    All New Year's gifts are safely hidden in secret rooms Fort Boyard, however, in order to get to them the children will have to answer fascinating questions, go through fun tests, show intelligence, ingenuity, and courage. This interactive holiday can be combined with a soap bubble show.

    Kindergarten graduation

    1. Chemical transformations.

    At the holiday, a professor will come to the kids, who will set up a smoke blower, show an amazing boil, mix up a sizzling soda, and create slimes, which the children will receive as a gift. Little spectators will also encounter crystals, whistling pipes and, of course, safe and very funny explosions.

    2. Chemical special effects.

    Very soon the kids will get acquainted with exact sciences At school. The show “Chemical Special Effects” will help prepare children for this meeting and show that chemistry is interesting and exciting. Kids will see how water turns into milk and vice versa; according to an ancient, secret recipe of alchemists, they will conjure gold and make toothpaste for an elephant; they will also get acquainted with a chemical genie who can make wishes come true; they will see a volcanic eruption and a magical traffic light.

    3. Four elements.

    The most beautiful and mysterious show that will introduce kids to the four elements: water, wind, air and earth. The animators will tell the audience a legend about the emergence of a world from the four elements, show soap bubbles, not real ones, but fiery ones, show a volcanic eruption, and demonstrate the power of the wind. Of course, kids will be able to take part in every experiment.

    Science show for primary school children

    1. Physical show.

    The program brought together the most exciting and spectacular experiences. In addition to four states of aggregation substances (solid, liquid, gaseous and plasma), children learn about atmospheric pressure, interesting properties light and sound. Each experience is accompanied detailed explanations animators, of course, in gaming and in a comic form. For example, with the help of soap bubbles, children will learn how to measure the wavelength of light, and clouds will suddenly appear from dry ice.

    2. Alice in Chemical Land.

    Alice will come to the children for the holiday, White Rabbit, the Hatter, who will tell about the magical fog, create souvenirs for little guests, call a genie for a snow-white smile Cheshire cat they will prepare toothpaste, unravel the mysteries of the Red Queen and, of course, find themselves at the royal ball, which will turn into a foam party.

    3. Book of records.

    Have you heard about the Guinness Book of Records? Should we come up with a book of student records? Who will blow the biggest bubble? Who will have the loudest explosion? Who will be the smartest? Who will have the most exciting experience? The first results, the recorded results, will certainly not be the last and will inspire the children to further study the exact sciences.

    Scenario for an entertaining evening in chemistry “Chemical Fireworks”.

    Currently, when special meaning each student acquires a choice based on his capabilities and interests academic subject for in-depth study, studying outside of class hours becomes especially significant. Among these types of activities great place belongs to chemical evenings.

    Goals:

    Educational:

      In a playful way, develop students’ knowledge about chemicals, reagents and their transformations.

      Continue to develop students’ ability to use chemical utensils and chemicals.

    Educational:

      Develop observation skills and memory (when showing entertaining experiments)

      Develop the ability to compare (using the example of comparison and analysis of various experiences)

      To develop students' interest in chemical science (through the demonstration of entertaining and interesting experiments)

    Educational:

      Continue the formation of a dialectical-materialistic worldview based on ideas about the importance of chemical science for human life.

    Time: 40 min – 60 min.

    Chemists: Hello!

    1-chemist: We are chemists! And chemistry is sleepless nights

    2-chemist: These are constant conversations about chemistry.

    3-chemist: These are chemical laboratories.

    4-chemist: These are the parents who say: “And our child is a chemist.”

    All: And this is life!

    1-chemist: But you may ask: why doesn’t everyone become a chemist? Yes, because chemistry means sleepless nights.

    2-chemist: This is a lot of talk about chemistry.

    3-chemist: These are chemical laboratories (he says, pinching his nose).

    4-chemist: These are the parents who say: “And our child (ugh!) is a chemist.”

    All: And this is life!

    1-chemist:(proudly) But still, we are chemists because chemistry means sleepless nights!

    2-chemist: This is constant talk about chemistry!

    3-chemist: These are chemical laboratories!

    4-chemist: These are the parents who say, “And our child (beats himself on the chest and says proudly) is a chemist!

    All: And this is life!

    1-chemist: Well of course, without a doubt

    We need to study chemistry

    Without knowledge of all phenomena

    It's impossible to live today.

    2-chemist: We need to do better

    To us, friends, in teaching

    And you shouldn't sigh

    That chemistry is torture!

    3-chemist: If we didn't know chemistry,

    We would always stomp on foot:

    Bus without fuel

    Will never go!

    4-chemist: So that we grow normally

    Strong and strong

    Vitamins produces

    Our chemistry too!

    1-chemist: So that plants grew,

    Substances were invented.

    It would be nice for us to have such -

    They would grow big quickly.

    2-chemist: Rubber in rare in nature,

    You can't live without it.

    We would walk through puddles

    In felt boots and without galoshes!

    3-chemist: Widely entered into our everyday life

    Various plastics

    In a very short time

    They were recognized by the masses!

    4-chemist: Let the polymer be for hair,

    Stimulating growth

    They'll invent it as soon as possible

    Then the braids will grow.

    Demonstration experience: "Martian Landscape". (On the poster, write “chemistry is a magical land” in advance with phenolphthalein, and then, when showing the experiment, wipe the colorless inscription with a swab soaked in alkali. The inscription will turn crimson.)

    1-chemist: Why is chemistry a magical land? Yes, because chemistry, like no other science, is capable of working miracles.

    2-chemist: Chemistry - allows a person to extract metals from ores and minerals, extract from natural raw materials - substances one more wonderful and amazing than another, it gives birth to hundreds of thousands of substances, even not found in nature, with useful and important properties.

    3-chemist: It turns oil into rubber, gasoline; gas - into the fabric; coal - in perfumes, dyes and medicinal substances.

    4-chemist: The list of good deeds that chemistry does is truly inexhaustible. Chemistry feeds us, clothes us, puts on shoes. Every person (without knowing it, carries out chemical reactions every day, without even leaving home: washing his hands, lighting matches and gas, preparing food).

    1-chemist: Today – we want to invite you to a chemical fireworks display and show only a small part chemical experiments, which may seem wonderful to you. But we are people - and we ourselves create these miracles.

    Demonstration experience: "Lighting a fire without matches." (For the experiment, prepare a slurry from KMnO 4 and H 2 SO 4 (conc.). Place this slurry on a tile and quietly add alcohol to it. A reaction occurs with the release large quantity heat and excess alcohol ignites.)

    2-chemist: I recently read a book about how there used to be people who tried to turn all metals into gold, and they also tried to get the “elixir of life.”

    3-chemist: Yes, they were called alchemists, they tried to get the “philosopher’s stone”.

    4-chemist: And I recently found a recipe for obtaining the “philosopher’s stone”, if you want, I’ll read it (unfolds the manuscript and reads):

    To make the elixir of the sages called the “philosopher’s stone,” take lead, my son, and heat it until it turns into a “green lion.” After that, heat it up more, and it will turn into a “red lion”. Boil it in a sand bath in sour grape alcohol, evaporate the product and you will get a gumy substance that can be cut with a knife. Place it in a clay-lined retort and distill slowly. The "Cimvarian shadows" will cover the retort with their "veil", and you will find inside it the "true dragon", because it devours its tail, and distill the product again. Finally, my son, cleanse carefully and you will see the appearance of a burning liquid and human blood.”

    1st chemist: A you know, I can get this amazing elixir myself.

    Demonstration experience: "Chameleon". (Pour a solution of potassium chromate into a glass, acidifying it with a few drops of sulfuric acid. While stirring the solution with a glass rod, add a solution of hydrogen peroxide: a blue color appears, which soon turns green.)

    2-chemist: The elixir is also a miracle for me, look, I can instantly get wine or milk from water.

    Demonstration experience: "Getting wine and milk." (The production of wine is the interaction of phenolphthalein and alkali; the production of milk is the interaction of sulfuric acid and barium chloride.

    3-chemist: Yes, water can really perform various miracles, but have you heard that water can be an arsonist?

    Demonstration experience: "Interaction of potassium with water."

    Demonstration experience: "Highly flammable liquid." (Place crushed KMnO 4 crystals into a porcelain cup, and then drop 3–4 drops of glycerin onto them from a pipette. After some time, the glycerin ignites.)

    Demonstration experience: "Lighting a fire with water." (Grind iodine in a mortar, mix 4 parts of iodine with 1 part of zinc powder. Mix well, make a slide and drop a few drops of water onto this slide.)

    Demonstration experience: “Fire Cloud” (Ignition of paraffin in water)

    4-chemist: Have you ever seen burning snow? Look here:

    Demonstration experience: "Burning Snow" (Pour snow into a jar and compact it. Then make a depression in it, into which place a piece of calcium carbide. Bring a lit match to the snow - the snow begins to burn.)

    1-chemist: Yes, it turns out that everything can burn, but not everything can burn.

    Demonstration experience: "Fireproof scarf." (Rinse the handkerchief in water, then wring it out lightly and soak it well in alcohol. Grab the handkerchief with crucible tongs and set it on fire. The alcohol will flare up, but the handkerchief will not burn.)

    2-chemist: You have heard the proverb “There is no smoke without fire”, and I can prove the opposite.

    Demonstration experience: "Smoke without fire." (Interaction of concentrated of hydrochloric acid and ammonia.)

    3-chemist: So I look at you and think: if we lived in the alchemical period, then we would be great wizards, and would be able to fool people with the help of these experiments. But more than that, we could easily get gold without even using the “philosopher’s stone.”

    Demonstration experience: "Golden Knife" (Prepare an iron knife, cleaned with sandpaper. Place this knife in concentrated solution copper sulfate. The knife becomes “golden”.)

    4-chemist: Now, if I lived in the alchemical period, I would become a great surgeon and perform all operations without any pain.

    Demonstration experience: "Inflicting a wound and healing it." (Moisten your hand with a solution of iron (III) chloride. After this, moisten some object (knife) with a solution of potassium thiocyanate and easily pass this object over your hand. A blood-red mark is formed.)

    We operate without pain, although there will be a lot of blood.

    Every operation requires sterilization.

    We will moisten it generously with iodine so that everything is sterile.

    Don't move around, patient! Give me the knife, assistant!

    Look, blood is flowing in a trickle, not water.

    But now I wipe my hand - there’s not a trace of the cut!

    1-chemist: Ah, if I had lived in the alchemical period, I would have been a great fakir; because I can easily perform various tricks.

    Demonstration experience: "Burning gunpowder." (Prepare gunpowder in advance: a mixture of 7 parts potassium nitrate, 1 part sulfur and 1 part coal. Place the mixture in a heap and set it on fire.)

    Demonstration experience: "Volcano". (Decomposition of ammonium dichromate)

    Demonstration experience: "Fire Blizzard" (In a round-bottomed flask, moisten the walls with ammonia in advance. Place chromium (III) oxide in a combustion spoon, heat it and throw it into the flask with ammonia. A whole sheaf of sparks is formed.)

    2-chemist: And finally, we will try to surprise you with this:

    Demonstration experience: "Production and explosion of detonating gas." (Use the method of displacing water into a jar to collect 2 volumes of hydrogen and 1 volume of oxygen. When the jar is filled, set the mixture of gases on fire with a splinter.)

    3-chemist: Well, we showed only some chemical miracles. And we want to end our chemical fireworks with the chemists’ anthem:

    We are destined to shed everything that pours.

    Spill what cannot be spilled!

    Our chemistry room is called!

    We were born to love chemistry!

    Higher and higher and higher

    Red bromine flies to the skies

    And whoever breathes this bromine,

    He's turning red himself!

    4-chemist: See you again!

    Nomination: Organization extracurricular activities

    Work completed: Kozhura Ekaterina Viktorovna

    KCO (regional education center) “School of Cosmonautics”

    Chemistry teacher, I work according to the standard state curriculum and F.G.’s textbook. Feldman, G.E. Rudzitisa.

    Home address: 662973 Zheleznogorsk – 3, st. Belorusskaya 49a apt. 42.

    Address of the School of Cosmonautics: 62990 Zheleznogorsk, st. Krasnoyarskaya 36.

    Email address: root @ shk. krasnoyarsk. su

    Telephone: in Zheleznogorsk 8 – (297) – 9 – 45 – 65.

    Fax machine: 231 (20202) – 9 – 45 – 65.

    Scenario for the chemical evening “Do-it-yourself miracles.”

    Teacher's opening speech. Dear Guys! Today, seventh, eighth, and ninth grade students have gathered here. Each of you has your own task. Eighth-graders prepared interesting experiments, showed various “miracles* and revealed the secret of each miracle.” Ninth graders, you are not just spectators, be on the alert, carefully follow everything that is happening, be prepared to answer the questions that the eighth graders will ask you. Your role, seventh graders, is to decide for yourself one question: is the science of chemistry interesting, do you want to study it? Of course, in chemistry, as in any science, in addition to the entertaining, there will also be difficult things. But what is difficult and interesting is that what a thinking person needs is for our mind not to be in idleness and laziness, but to constantly work, work and work. At the very end of our meeting, I will ask you one single question, and you will answer it, Now let's get started To miracles."

    Four students come out.

    1st student. It's hot here, I'm thirsty. Who 6 ask for water?

    2nd student. I would drink a lot haZiva without syrup.

    3rd student . Oh, I like it with syrupjust a little bit, a little bit.

    4th student. Brothers, I need a cow -I want fresh milk!

    The 5th student comes out. In his hands he has a large flask with liquid.

    5th student. Are you guys thirsty? In countno fabulous liquid, I can handle miracles, II'm teaching chemistry. Put up the glasses! ExperienceWe will definitely carry it out, everything is according to plan.

    The guys take from the table and place glasses in which solutions are placed on the bottom necessary substances. The 5th student pours from the flask to everyone WHAT He Asked.

    5th student. Here's water, here's soda, here'sfresh milk, it turned out very cleverly, and the secret easy to find out.

    The guys pretend that they want to drink the contents of the glasses.

    5th student . Stop guys, wait a minutethere was no trouble, please don't drink anythingno water, no water. There are serious prohibitions in this strict office. Remember everything, friends: hereYou can't drink or eat.

    1, 2, 3 We are familiar with miracles, we can do them ourselves.

    5th student . The first miracle happenedwas it in the glasses?

    1st student. And the answer is quite simple - it wasMy glass is empty.

    2nd student . I have soda in my glass.

    3rd student . Along with it is methyl orange.

    4th student. Mine contains barium chloride.

    5th student. What does this mean? Guess,ninth grade. We count on you! Not composedIt's hard for you to understand what's in the flask...

    All ninth graders: Acid!

    5th student . You probably know her rank?

    9th Class. Sulfuric!

    They leave. The 6th student comes out.

    6th student. I'm already in the wonders of chemicalsI'll make a fire without fire, without matches. OnI add a bed of splinters and firewood and the fire is ready. I'll take itput some cotton wool in your hand, soak it in alcohol, put it on the firedrop: burn, if I want!

    He does everything he says, and the fire lights up.

    6th student. I'll tell you my secret, NikaThere's no secret here. Hid here under the fireincendiary mixture. We are familiar with miraclesWe can make them ourselves!

    Leaves. 1st student appears

    7th student. I have a calm experience, withoutfire and flame. I will ask questions. Nineclass, attention!

    Conducts an experiment with phenolphthalein.

    7th student. I'm not afraid of acids, evenvery strong. But in alkali solutionsI like raspberry. Brighter than the juice of all raspberries, who am I?

    9th Class. Phenolphthalein!

    The next experiment is with methyl orange.

    7th student. In alkalis I am very yellow,and in acids it is very red. And the environment is neutralnoah - the color orange, beautiful. Indicatorvery important, what is my name?

    9th Class. Methyl orange.

    Experience with a piece of universal indicator paper.

    7 - and student. This yellow piece of paper will indicate everythingwithout difficulty: it will turn blue - there is alkali in the flask, paintNo - acid. If the environment is neutral - notwill change color then. We are for these instructions as shall we call her?

    9th Class. Universal!

    Leaves. The 8th student comes out.

    8th student. We are familiar with miracles - dowe can do them ourselves. Ninth grade, attention, there will beyou have a task. Pours onto a regular boardwater, and a glass of melted snow is also placed there.

    The 1st student comes out.

    1st student. I pour salt into a glass, and you,my friend, please interfere. I count to fiveA You twist everything with a stick.

    He slowly counts so that the glass has time to freeze.

    8th student. The chemical glass froze, process...

    9th Class. Endothermic

    The 8th and 1st students leave. The 9th student comes out.

    9th student. All water, snow and solution,boring conversation... I have other plans:I'll light a flame on the grid.Sets fire to a pile of sand soaked in alcohol.

    I don’t know how to do that yet, snakes will crawl out of the sand. Scary, biting, won't you cry from fear? Aren't you afraid? Well, look. Not all at once. Wait. To see the snakes, you need to warm them up well, but while I wake them up, I’ll tell you something else.

    He speaks and at the same time demonstrates experience,

    One summer I had a sore throat for a very long time. They prescribed me to rinse with furacillin for a sore throat. Still, the sore throat went away, even though I fought it for a long time. And there are two bottles of that furacillin left. Today we whitewashed the walls and washed our hands of lime. I decided to pour the old medicine into this water. I was terribly surprised, I even shuddered when the lime water turned reddish-red. I brought the rest to school, and now furacillin determines the alkali for us, just like phenolphthalein. Does not change color in water, does not change in acid, in alkalis furacillin is bright, like an orange.

    He turns again to the experience with “black snakes”.

    Alcohol burns and produces a lot of heat. It decomposes soda with heat into carbon dioxide. It chars the sugar - that's where the blackness comes from. This carbon dioxide inflates the sugar with bubbles. Everything is clear, it’s clear here, snakes, why they crawl. We are familiar with miracles, we know how to do them ourselves.)

    Leaves. The 2nd and 10th students appear.

    10th student. Smile quickly, smilebe more cheerful. We are opening our pho today tailor shop

    2nd student. We are ready to beginsimple work. We can get it instantly your photo.

    Invites one of the seventh graders.

    10th student. Here on this blank sheet of paperWatch attentively. Smile more cheerfully - this is Necessarily.

    2nd student. We can develop this photographI eat it easily: I sprinkle the photo with a little bullets verizer.

    Invites the next one.

    10th student. Again a blank sheet of paperWe have another way, a photo of the proglaWe smoke with a hot iron.

    He irons the sheet and shows everyone the photo.” Invites more seventh graders.

    2nd student. There is also a third way, thisNote to yourself that nothing to a piece of paperWe won't touch.

    This photograph is developed under a bell in an ammonia atmosphere.

    10th student. Look, can everyone see it? AThe secret is quite simple.

    2nd student. Here he helped us in our workfamiliar indicator.

    Shows the first photo.

    They painted with acid.

    Shows the second picture.

    Ammonia gas.

    Shows a photo under the bell.

    2nd And 10th students. We are familiar with chu desami, we know how to make them ourselves.

    They leave. The 4th and 3rd students appear.

    3rd scientist and k., Here's another fun: whowill he give his hand to be cut off? Sorry for the handreading, then the patient is needed for treatment.

    A seventh grader is invited.

    4th student. We operate without pain, however,there will be a lot of blood.

    3rd student. For every operation you needsterilization. Help, assistant, give me iodine!

    4th student . One moment! (Gives “iodine”).

    3rd student. We will moisten it with “iodine” generously,so that everything is sterile. Don't turn around, papatient, give me the knife, assistant!

    Does with a knife"incision", "blood" flows.

    4th student. Look, just a trickleblood flows, not water. But now I'll wipe my handku - not a trace of the cut.

    - 3rd student. This Experience we explain for nowwe can’t, I’ve been promoted to ninth grade - explain We'll find some agreement.

    They leave. The 5th student comes out. He reads out several verses from P. Ershov’s fairy tale “The Little Humpbacked Horse” about the firebird.

    5th student. We remembered the fairy tale slightly,

    about the horse, about the hunchback.

    There's a firebird feather

    It brought Vanya happiness.

    It's time to marvel

    like the firebird's feather burns.

    He lights the alcohol in the cups for evaporation, the alcohol contains dissolved salts of sodium, potassium, kedah, strontium, etc. Then he covers the cups with a thick sheet of cardboard.

    5th student. Answer, ninth grade, byWhy did the fire go out? Without what will the flame die? To him needed...

    9th Class. Oxygen!

    The 5th student leaves. The 11th student appears and places the finished model of the volcano on the table. Lights a spirit lamp, heats a glass rod

    11th student. And now, friends, for youfrom history a story. Slept early at night or in the morningtownspeople, suddenly a flame appeared from the crater of the volcano. Rumble and roar, streams pour through the mouthlava. So under the lava and under the ashes he diedglorious family. I'll show you, as best I can, the death of family of Pompeii.

    Touches with a heated stick, a “volcanic eruption” begins.

    11th student. You guys will remember this eruption

    By the way, what type of reaction is this?

    9th Class. Decompositions!

    All participants leave.

    1st student. Our time is up.

    2nd student. But we didn't show you everything,what we can do.

    3rd student . We can still bend the stacklinen tubes and drill rubber plugs.

    4th student. Speak chemical language.

    5th student. Copper coins turn into"silver".

    6th student. Make a thunderstorm V test tube

    7th student . Receive hydrogen and oxygen.

    8th student. Explode explosive gas.

    9th student. Making black powder and more much more.

    10th student. This is what you will learn in bu next year.

    11th student. If you are passionatestudy the most interesting science - chemistry.

    Teacher. Our entertaining hour is over. In a year, seventh grade, you will be able to do all this if you want. Have you noticed that ninth graders often had to finish sentences and speak in rhyme. It's easy if you know what to say. So, now I have the same question for you that I promised to ask at the beginning of our meeting. Interesting secrets hidden in this office. I'm looking forward to seeing you next year. What will everyone tell me? I...

    7th grade. I'll come"

    Teacher, so come! I am waiting for you!

    If you're wondering how to celebrate your child's birthday, you might like the idea of ​​hosting a science show for kids. Last time scientific holidays are becoming increasingly popular. Almost all children enjoy entertaining experiences and experiments. For them it is something magical and incomprehensible, and therefore interesting. The cost of hosting a science show is quite high. But this is not a reason to deny yourself the pleasure of watching the amazed children’s faces. After all, you can get by on our own, I do not resort to the help of animators and holiday agencies.

    In this article, I have made a selection of simple chemical and physical tests and experiments that can be done at home without any problems. Everything you need to carry them out can probably be found in your kitchen or medicine cabinet. You won't need any special skills either. All you need is desire and a good mood.

    I tried to collect simple but spectacular experiments that will be interesting to children different ages. I prepared for each experience scientific explanation(it’s not for nothing that I studied to be a chemist!). Whether you explain to your children the essence of what is happening or not is up to you. It all depends on their age and level of training. If the children are small, you can skip the explanation and go straight to the spectacular experience, saying only that they will be able to learn the secrets of such “miracles” when they grow up, go to school and begin to study chemistry and physics. Perhaps this will make them interested in studying in the future.

    Although I chose the safest experiments, they still need to be taken very seriously. It is better to perform all manipulations with gloves and a gown, at a safe distance from children. After all, vinegar and potassium permanganate can cause trouble.

    And, of course, when holding a children's science show, you need to take care of the image of a mad scientist. Your artistry and charisma will largely determine the success of the event. Transform from ordinary person It’s not at all difficult to become a funny scientific genius - all you have to do is tousle your hair, put on big glasses and a white coat, get smeared with soot and make a facial expression appropriate to your new status. This is what a typical mad scientist looks like.

    Before putting on a science show on children's party(by the way, this can be not only a birthday, but also any other holiday), all experiments should be done in the absence of children. Rehearse so that there are no unpleasant surprises later. You never know what can go wrong.

    Children's experiments can be carried out without a festive occasion - just so that you can spend interesting and useful time with your child.

    Choose the experiences you like best and create a holiday script. In order not to overburden children with science, even if it is entertaining, dilute the event with fun games.

    Part 1. Chemical show

    Attention! When conducting chemical experiments, you should be extremely careful.

    Foam fountain

    Almost all children love foam - the more, the better. Even kids know how to make it: to do this, you need to pour shampoo into the water and shake it well. Can foam form on its own without shaking and also be colored?

    Ask the children what they think foam is. What does it consist of and how can it be obtained. Let them express their guesses.

    Then explain that foam is bubbles filled with gas. This means that for its formation you need some substance from which the walls of the bubbles will consist, and a gas that will fill them. For example, soap and air. When soap is added to water and stirred, air enters these bubbles from environment. But gas can be obtained in another way - in the process chemical reaction.

    Option 1

    • hydroperite tablets;
    • potassium permanganate;
    • liquid soap;
    • water;
    • glass vessel with a narrow neck (preferably beautiful);
    • glass;
    • hammer;
    • tray.

    Setting up the experiment

    1. Using a hammer, crush the hydroperite tablets into powder and pour it into the flask.
    2. Place the flask on a tray.
    3. Add liquid soap and water.
    4. Prepare an aqueous solution of potassium permanganate in a glass and pour it into the flask with hydroperide.

    After the solutions of potassium permanganate (potassium permanganate) and hydroperide (hydrogen peroxide) merge, a reaction will begin to occur between them, accompanied by the release of oxygen.

    4KMnO 4 + 4H 2 O 2 = 4MnO 2 ¯ + 5O 2 + 2H 2 O + 4KOH

    Under the influence of oxygen, the soap present in the flask will begin to foam and lick out of the flask, forming a kind of fountain. Due to potassium permanganate, part of the foam will turn pink.

    You can see how this happens in the video.

    Important: The glass vessel must have a narrow neck. Do not take the resulting foam into your hands and do not give it to children.

    Option 2

    Another gas, for example carbon dioxide, is also suitable for foam formation. You can paint the foam any color you want.

    To carry out the experiment you will need:

    • plastic bottle;
    • soda;
    • vinegar;
    • food coloring;
    • liquid soap.

    Setting up the experiment

    1. Pour vinegar into the bottle.
    2. Add liquid soap and food coloring.
    3. Add baking soda.

    Result and scientific explanation

    When soda and vinegar interact, a violent chemical reaction occurs, accompanied by the release of carbon dioxide CO 2 .

    Under its influence, the soap will begin to foam and lick out of the bottle. The dye will color the foam in the color you choose.

    Fun ball

    What's a birthday without balloons? Show the children the balloon and ask how to inflate it. The guys, of course, will answer with their mouths. Explain that the balloon is inflated by the carbon dioxide that we exhale. But there is another way to inflate the balloon.

    To carry out the experiment you will need:

    • soda;
    • vinegar;
    • bottle;
    • balloon.

    Setting up the experiment

    1. Place a teaspoon of baking soda inside the balloon.
    2. Pour vinegar into the bottle.
    3. Place the balloon on the neck of the bottle and pour the baking soda into the bottle.

    Result and scientific explanation

    As soon as soda and vinegar come into contact, a violent chemical reaction will begin, accompanied by the release of carbon dioxide CO 2. Balloon will begin to inflate before our eyes.

    CH 3 -COOH + Na + − → CH 3 -COO − Na + + H 2 O + CO 2

    If you take a smiley ball, it will make an even greater impression on the guys. At the end of the experiment, tie a balloon and give it to the birthday person.

    Watch the video for a demonstration of the experience.

    Chameleon

    Can liquids change color? If yes, why and how? Before you try the experiment, be sure to ask your children these questions. Let them think. They will remember how water is colored when you rinse a brush with paint in it. Is it possible to discolor the solution?

    To carry out the experiment you will need:

    • starch;
    • alcohol burner;
    • test tube;
    • cup;
    • water.

    Setting up the experiment

    1. Pour a pinch of starch into a test tube and add water.
    2. Drop some iodine. The solution will turn color Blue colour.
    3. Light the burner.
    4. Heat the test tube until the solution becomes colorless.
    5. Pour into a glass cold water and immerse the test tube in it so that the solution cools and turns blue again.

    Result and scientific explanation

    When interacting with iodine, a starch solution turns blue, since this produces a dark blue compound I 2 * (C 6 H 10 O 5) n. However, this substance is unstable and, when heated, breaks down again into iodine and starch. When cooled, the reaction goes in the other direction and we again see the solution turning blue. This reaction demonstrates the reversibility of chemical processes and their dependence on temperature.

    I 2 + (C 6 H 10 O 5) n => I 2 *(C 6 H 10 O 5) n

    (iodine - yellow) (starch - clear) (dark blue)

    Rubber egg

    All children know that eggshell very fragile and can break at the slightest blow. It would be nice if the eggs didn’t break! Then you wouldn’t have to worry about getting the eggs home when your mom sends you to the store.

    To carry out the experiment you will need:

    • vinegar;
    • raw egg;
    • cup.

    Setting up the experiment

    1. To surprise the children, you need to prepare for this experience in advance. 3 days before the holiday, pour vinegar into a glass and place a raw chicken egg in it. Leave for three days so that the shell has time to completely dissolve.
    2. Show the children a glass with an egg and invite everyone to say a magic spell together: “Tryn-dyrin, boom-burym!” Egg, become rubber!”
    3. Remove the egg with a spoon, wipe it with a napkin and demonstrate how it can now become deformed.

    Result and scientific explanation

    Eggshells are made of calcium carbonate, which dissolves when reacted with vinegar.

    CaCO 3 + 2 CH 3 COOH = Ca(CH 3 COO) 2 + H 2 O + CO 2

    Due to the presence of a film between the shell and the contents of the egg, it retains its shape. Watch the video to see what an egg looks like after vinegar.

    Secret letter

    Children love everything mysterious, and therefore this experiment will certainly seem like real magic to them.

    Take an ordinary ballpoint pen and write a secret message from aliens on a piece of paper or draw some kind of secret sign that no one except the guys present can know about.

    When the children read what is written there, tell them what it is big secret and the inscription must be destroyed. Moreover, magic water will help you erase the inscription. If you treat the inscription with a solution of potassium permanganate and vinegar, then with hydrogen peroxide, the ink will wash off.

    To carry out the experiment you will need:

    • potassium permanganate;
    • vinegar;
    • hydrogen peroxide;
    • flask;
    • cotton buds;
    • ball pen;
    • paper;
    • water;
    • paper towels or napkins;
    • iron.

    Setting up the experiment

    1. Draw a picture or message on a piece of paper with a ballpoint pen.
    2. Pour some potassium permanganate into the test tube and add vinegar.
    3. Soak a cotton swab in this solution and swipe over the inscription.
    4. Take another cotton swab, moisten it with water and wash off the resulting stains.
    5. Blot with a napkin.
    6. Apply hydrogen peroxide to the inscription and blot it again with a napkin.
    7. Iron or place under a press.

    Result and scientific explanation

    After all the manipulations, you will receive a blank sheet of paper, which will greatly surprise the children.

    Potassium permanganate is a very strong oxidizing agent, especially if the reaction occurs in an acidic environment:

    MnO 4 ˉ+ 8 H + + 5 eˉ = Mn 2+ + 4 H 2 O

    A strong acidified solution of potassium permanganate literally burns many organic compounds, turning them into carbon dioxide and water. To create an acidic environment, our experiment uses acetic acid.

    The product of the reduction of potassium permanganate is manganese dioxide Mn0 2, which has a brown color and precipitates. To remove it, we use hydrogen peroxide H 2 O 2, which reduces the insoluble compound Mn0 2 to a highly soluble manganese (II) salt.

    MnO 2 + H 2 O 2 + 2 H + = O 2 + Mn 2+ + 2 H 2 O.

    I suggest you watch how the ink disappears in the video.

    The power of thought

    Before setting up the experiment, ask the children how to extinguish a candle flame. They, of course, will answer you that you need to blow out the candle. Ask if they believe you can put out a fire with an empty glass by casting a magic spell?

    To carry out the experiment you will need:

    • vinegar;
    • soda;
    • glasses;
    • candles;
    • matches.

    Setting up the experiment

    1. Pour baking soda into a glass and fill it with vinegar.
    2. Light some candles.
    3. Bring a glass of baking soda and vinegar to another glass, tilting it slightly so that the carbon dioxide produced during the chemical reaction flows into the empty glass.
    4. Pass a glass of gas over the candles, as if pouring it on the flame. At the same time, make a mysterious expression on your face and say some incomprehensible spell, for example: “Chickens-borers, moors-pli!” Flame, don’t burn anymore!” Children must think that this is magic. You will reveal the secret after the delight.

    Result and scientific explanation

    When soda and vinegar interact, carbon dioxide is released, which, unlike oxygen, does not support combustion:

    CH 3 -COOH + Na + − → CH 3 -COO − Na + + H 2 O + CO 2

    CO 2 is heavier than air, and therefore does not fly up, but settles down. Thanks to this property, we have the opportunity to collect it in an empty glass, and then “pour” it onto the candles, thereby extinguishing their flame.

    How this happens, watch the video.

    Part 2. Entertaining physical experiments

    Genie strongman

    This experiment will allow children to look at their usual action from a different perspective. Place an empty wine bottle in front of the children (it is better to remove the label first) and push the cork into it. And then turn the bottle upside down and try to shake the cork out. Of course, you won't succeed. Ask the children: is there any way to get the cork out without breaking the bottle? Let them say what they think about this.

    Since nothing can be used to pick up the cork through the neck, there is only one thing left to do - try to push it out from the inside. How to do it? You can call the genie for help!

    The gin used in this experiment will be a large plastic bag. To enhance the effect, you can decorate the bag with colored markers - draw eyes, nose, mouth, hands, some patterns.

    So, to conduct the experiment you will need:

    • empty wine bottle;
    • cork;
    • plastic bag.

    Setting up the experiment

    1. Twist the bag into a tube and insert it into the bottle so that the handles are on the outside.
    2. When turning the bottle over, ensure that the cork is on the side of the bag, closer to the neck.
    3. Inflate the bag.
    4. Carefully begin to pull the package out of the bottle. The cork will come out along with it.

    Result and scientific explanation

    As the bag is inflated, it expands inside the bottle, expelling air from it. When we begin to pull out the bag, a vacuum is created inside the bottle, due to which the walls of the bag wrap around the cork and drag it out with them. This is such a strong gin!

    To see how this happens, watch the video.

    Wrong glass

    On the eve of the experiment, ask the children what will happen if you turn a glass of water upside down. They will answer that the water will pour out. Tell them that this only happens with the “right” glasses. And you have the “wrong” glass from which water does not pour out.

    To carry out the experiment you will need:

    • glasses of water;
    • paints (you can do without them, but this makes the experience more spectacular; it’s better to use acrylic paints– they give more saturated colors);
    • paper.

    Setting up the experiment

    1. Pour water into glasses.
    2. Add some color to it.
    3. Wet the edges of the glasses with water and place a sheet of paper on top of them.
    4. Press the paper firmly against the glass, holding it with your hand, and turn the glasses upside down.
    5. Wait a moment until the paper sticks to the glass.
    6. Slowly remove your hand.

    Result and scientific explanation

    Surely all children know that we are surrounded by air. Although we cannot see him, he, like everything around him, has weight. We feel the touch of air, for example, when the wind blows on us. There is a lot of air, and therefore it presses on the ground and everything around. This is called atmospheric pressure.

    When we apply paper to a wet glass, it sticks to its walls due to the force of surface tension.

    In an inverted glass, between its bottom (which is now at the top) and the surface of the water, a space is formed filled with air and water vapor. The force of gravity acts on the water, pulling it down. At the same time, the space between the bottom of the glass and the surface of the water increases. Under conditions of constant temperature, the pressure in it decreases and becomes less than atmospheric. The total pressure of air and water on the paper from the inside is slightly less than the air pressure from the outside. That's why water doesn't pour out of the glass. However, after some time, the glass will lose its magical properties, and the water will still spill out. This is due to the evaporation of water, which increases the pressure inside the glass. When it becomes more atmospheric, the paper will fall off and the water will pour out. But you don’t have to bring it to this point. It will be more interesting this way.

    You can watch the progress of the experiment in the video.

    Gluttonous bottle

    Ask your children if they like to eat. Do they like to eat? glass bottles? No? Don't they eat bottles? But they are wrong. They don’t eat ordinary bottles, but they don’t even mind having a snack with magic bottles.

    To carry out the experiment you will need:

    • boiled chicken egg;
    • bottle (to enhance the effect, the bottle can be painted or embellished in some way, but so that children can see what is happening inside it);
    • matches;
    • paper.

    Setting up the experiment

    1. Peel off the shell boiled egg. Who eats eggs in a shell?
    2. Set fire to a piece of paper.
    3. Throw the burning paper into the bottle.
    4. Place the egg on the neck of the bottle.

    Result and scientific explanation

    When we throw burning paper into a bottle, the air in it heats up and expands. By closing the neck with an egg, we prevent the flow of air, as a result of which the fire goes out. The air in the bottle cools and contracts. A pressure difference is created inside the bottle and outside, due to which the egg is sucked into the bottle.

    That's all for now. However, over time I plan to add a few more experiments to the article. At home, you can, for example, conduct experiments with balloons. Therefore, if you are interested in this topic, add the site to your bookmarks or subscribe to the newsletter for updates. When I add something new, I will inform you about it by e-mail. It took me a lot of time to prepare this article, so please respect my work and when copying materials, be sure to include an active hyperlink to this page.

    If you have ever conducted home experiments for children and organized a science show, write about your impressions in the comments and attach a photo. It will be interesting!



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