Experiments in the kitchen. Dancing rice cereal

CONSULTATION FOR PARENTS

« ENTERTAINING EXPERIENCES IN THE KITCHEN.

Prepared and hosted:

educator MDOBU " Kindergarten"Borovichok" p. Koltubanovskiy,

Dilmukhametova. A.M
caregiverIqualifying

2016

Almost scientific experiments in the kitchen!

Surely your baby, like all children, loves everything mysterious and mysterious, studies the world with everyone. possible ways and asks many questions about the surrounding objects and phenomena.

Often, completely simple and ordinary things for adults cause sincere admiration of the baby.

But there are a lot of simple experiments that can be carried out right in the kitchen. They do not require any preparation and special equipment, most of them the young experimenter can do himself, guided by his mother's instructions, but, of course, under her supervision.

This will not only help keep the baby busy for a while, such almost scientific experiments- not just entertainment. Research activity is the best way to develop the child's thinking, his memory and observation, gives the first ideas about the physical and chemical phenomena around us, helps to understand some of the laws of nature.

Especially if the mother is in no hurry to draw conclusions for the baby, but gives him the opportunity to try to find the answer himself. And although the answers are not always correct, it does not matter. The most important thing is not the experience, but the question and the search for an answer to it. This issue should never be neglected, especially if we are talking about a curious and nimble baby.

Safety engineering.

Omitting the topic of safety in the kitchen in general, I would like to say a few words about the “instruction” of the child himself before starting the experiments. This must be done even when all the components of your experiments are perfectly safe.

It is with a safety briefing that work begins in any laboratory, and after all, your kitchen turns into a real laboratory for a while. Be sure to tell your child about it. Please note that you need to wear special clothes to work in the laboratory.

In confirmation of your words, give the baby a kitchen apron. All substances should be handled very carefully, because poisonous ones can also be found among them. And of course, you should not taste everything, especially if you do not know what kind of substance it is.

All our experiments today are completely harmless and do not contain hazardous substances(The only exception is iodine). But the baby from the very beginning research activities should clearly know the rules of working with them. Not intimidation, but reasonable precaution should be at the heart of your conversation. When preparatory work carried out, you can proceed directly to the experiments.

Experimental water.

The simplest and most affordable physical experiments can be done with plain water. Before proceeding with the experiments, talk with the baby about water as natural substance. Remember where you can find water (rivers and seas, rain and fog droplets, snow and ice, dew and plant sap), why it is needed and life on the planet would be possible if water suddenly disappeared. Ask your child if the water has a color, what it smells like, what it tastes like. Do not answer for him, let him make a small discovery himself, determining that the water is transparent and has no taste or smell. If the baby is not yet familiar with aggregate states water, do this simple experiment.

Experience first. Pour some water into an ice cube tray and let your little one place it in the freezer. After a couple of hours, pull out the mold and make sure that ice has appeared in it instead of water. What a miracle, where did it come from? Will the baby be able to figure it out on his own? Is solid ice really the same water? Or maybe it was mom who came up with some kind of tricky trick and changed the molds in the freezer? Okay, let's check it out! In the heat of the kitchen, the ice will quickly melt and turn into plain water. Here is an amazing discovery for you: in the cold liquid water freezes and turns into solid ice. But water can turn into more than just ice. Pour out melt water in a saucepan, put it on the fire and let the baby watch it carefully while you are busy with your own business. When the water boils, pay attention to the rising steam. Gently bring a mirror to the saucepan and show the baby the droplets of water formed on it. So steam is also water! Yes, they are tiny water droplets. If the saucepan boils long enough, all the water will disappear from it. Where did she go? Turned into steam and scattered throughout the kitchen. When the water boils, pay attention to the rising steam. Gently bring a mirror to the saucepan and show the baby the droplets of water formed on it. So the steam is

also water! Yes, they are tiny water droplets. If the saucepan boils long enough, all the water will disappear from it. Where did she go? Turned into steam and scattered throughout the kitchen.

Second experience. Fill a plate with some water, mark its level on the wall of the plate with a marker and leave, say, on the windowsill for a few days. Looking into the plate every day, the baby will be able to observe the miraculous disappearance of water. Where does the water go? In the same way as in the previous experiment, it turns into water vapor - it evaporates. But why in the first case the water disappeared in a matter of minutes, and in the second - in a few days, let the baby think for himself. If he finds a connection between evaporation and temperature, you can be rightfully proud of your little physicist. Now, relying on the new knowledge of the crumbs, you can explain to him what fog is, and why steam comes out of the mouth in the cold, and where the rain comes from, and what happens in the jungle when a hot sun peeps out after a tropical downpour, and many, many other amazingly interesting phenomena.

Experience the third. Now talk to your child about some of the properties of water. He is well acquainted with one of them and encounters almost daily. It's about dissolution. Ask the crumbs what happens to sugar when he puts it in tea and stirs it with a spoon. Sugar disappears. Does it disappear completely? But after all tea was unsweetened, and became sweet. Sugar does not disappear, it dissolves, breaks up into tiny particles invisible to the eye and is distributed throughout the glass. But will all substances dissolve in water in the same way? Wait for the child's response, and then offer to test your answer experimentally. Pour warm water into jars or cups, give your baby all kinds of safe substances (sugar, salt, baking soda, cereals, vegetable oil, "chicken" cubes, flour, starch, sand, some earth from a flower pot, chalk, etc.), and let him put them in glasses, stir and draw the appropriate conclusions. This will captivate the young researcher for a long time. In the meantime, you can safely do kitchen chores, looking after the baby and, if necessary, helping with advice. In order for the child to be convinced that the dissolved substance really does not disappear anywhere, conduct such an experiment with him.

Fourth experience. In a tablespoon, take a little liquid from the glass where the baby poured salt before. Hold the spoon over the fire until the water has evaporated. Show the baby what's left in the spoon White powder and ask what it is. Cool the spoon and invite the child to taste the powder. He will easily determine that it is salt.

Experience fifth. Now let's do the following. Take two glasses, pour into each the same number water, only in one glass - cold, and in the other - hot (not boiling water, so that the baby does not accidentally burn himself). Put a tablespoon of salt into each glass and begin to stir. In order for the baby to draw the right conclusions, it is very important to observe exactly the same conditions for both glasses, with the exception of the water temperature. I do not in vain draw your attention to this. This applies not only to this experiment, but to all others. Children's logic is an interesting and unpredictable thing, kids think in a completely different way than adults. And what is obvious to us may look completely different to them. So let them themselves interfere in both glasses. Then it will be much easier to see the dependence of the dissolution rate on temperature ...

Chicken egg experiments!

If you are preparing scrambled eggs for breakfast, and the ubiquitous baby is spinning under your feet, give him two chicken eggs, one raw, the second boiled, and offer, without breaking, to determine which is which. Tell me that the eggs need to be rotated on the table. While the baby is busy with this fascinating business, you will have time to finish preparing breakfast. And then explain to the baby why a boiled egg rotates easily and quickly, and a raw one makes one or two awkward turns and freezes. Do not talk about the center of gravity, it is unlikely that the baby will understand this. Just say that inside a raw egg, the yolk and white hang out, preventing the egg from unrolling. But the hard content of a boiled egg allows it to rotate easily.

Give the baby a half-liter jar of water and raw egg. Let him put it in water and see what happens. The egg will sink to the bottom of the jar. Now you need to pull it out, and add 2 tablespoons of salt to the water and mix well. We lower the egg into the water again and observe an interesting picture: now the egg does not sink, but floats on the surface. You and I know that the matter is in the density of water. The higher it is (in this case due to salt), the more difficult it is to drown in it. Invite the child to express his version of explaining this phenomenon. Remind him that it is much easier to swim in the sea than in the river. Salty water helps to stay on the surface. Now take a liter jar, fill it with fresh water by a third, lower the egg into the jar. Take warm water in a separate container, and let the baby dissolve the salt there to make a concentrated saline solution. Now give your child the following task: you need to ensure that the egg does not sink or float, but “hang” in the water column, like a submarine. To do this, pour the saline solution into the jar in small portions until the desired effect is obtained. If the baby pours too much solution and the egg comes up to the surface, invite him to think about how to fix the situation (pour into a jar required amount fresh water, thereby reducing its density).

Ordinary extraordinary taste!

Experience first. If today you decided to bake a cake, then it's time to show your baby a bewitching reaction between soda and vinegar. If you recall a school chemistry course, it is called a neutralization reaction, because in its process, acid and alkali neutralize each other. Pour 2-3 tablespoons of vinegar into a bowl, add a teaspoon of baking soda. A stormy hiss and foam will not leave indifferent any crumb. You can tell the child that the bubbles that appear are carbon dioxide, the one that we exhale and which is necessary for plants to breathe. It is thanks to carbon dioxide that our cake or pie is so fluffy and airy: the bubbles pass through the dough and loosen it. And we also drink carbon dioxide with sparkling water, it turns ordinary water into “prickly”.

Second experience. The baking soda and vinegar experience can be turned into a super-spectacular show by making a model of a volcano with them. But first you need to mold the volcano itself from plasticine. For these purposes, plasticine, already once used, left over from children's creative research, is quite suitable. We divide the plasticine into 2 parts. One half is flattened (this will be the base), and from the other we blind a hollow cone the size of a glass with a hole at the top (slopes and the mouth of the volcano). We connect both parts, carefully fastening the joints so that our volcano is airtight. We transfer the "volcano" to a plate, which we place on a large tray. Now let's prepare the lava. We pour a tablespoon of baking soda into the volcano, a little red food coloring (it will do beetroot juice), pour in a teaspoon of dishwashing liquid. Finishing touch: the baby pours a quarter cup of vinegar into the "vent". The volcano immediately wakes up, a hiss is heard, brightly colored foam begins to pour out of the "vent". Spectacular and unforgettable spectacle! If you are reluctant to sculpt a plasticine volcano, you can build a volcanic cone from paper or cardboard, and place a glass bottle inside. Such experiments make an indelible impression on the kids.

Experience the third. Surely the baby will also like this experience, which can be shown to friends or grandparents as a real trick. It is based on the same reaction between soda and vinegar. Prepare a small balloon. It is desirable that it inflates easily (check this in advance). Keep the ball ready. Dissolve 2 teaspoons of baking soda in 3 tablespoons of water and pour the solution into a glass bottle. Pour a quarter cup of vinegar into the same bottle. Now quickly put a ball on the neck and secure with a strip of tape (everything should be at hand). The carbon dioxide released during the reaction will inflate the balloon.

Fourth experience. And the next experience can have for the crumbs not only cognitive, but also educational value. Take a raw chicken egg, put it in a half-liter jar and pour table vinegar over it. Close the jar with a lid and leave for a day. Then pull it out and try to squeeze it in your hands. The shell will become soft and flexible. Tell your child that vinegar dissolves the minerals in eggshells (namely, they give the shell strength). If you hold a chicken bone in vinegar for 3-4 days, it will also become soft. Approximately the same effect on the enamel of our teeth acid secreted by bacteria in the oral cavity. So for little stubborn people who do not want to brush their teeth, this experience will be very revealing.

Experience fifth. If in the summer the kid did not draw all the crayons on the asphalt and one piece was preserved, it will come in handy for us. spectacular experience. Dip it in a glass of vinegar and see what happens. The chalk in the glass will begin to hiss, bubble, decrease in size and soon disappear completely. The main thing is that this fantastic disappearance does not end in tears of a little experimenter. Often, babies are tenderly attached to all sorts of little things, like pencil stubs, crayons, all kinds of rags and boxes. Unfortunately, the dissolved chalk cannot be returned back. So it is better to discuss this point with the baby before the experiment.

Magic Lemon!

Experience first. Now let's look in the refrigerator and see if there is something suitable for our experiments. If you find an apple and a lemon there, do the following with them. Cut an apple in half, place it cut-side up on a saucer, and have your child squeeze some lemon juice onto one of the halves. The kid will surely be surprised by the fact that after a few hours the “clean” half of the apple will darken, and the one that was “protected” by lemon juice will remain the same white. We adults know that browning is due to the oxidation of the iron contained in the apple by the oxygen in the air. A ascorbic acid, contained in lemon juice, is a natural antioxidant that slows down the oxidation process. Tell your child that apples have a lot of very useful substances, including iron. Of course, no matter how much you chew apples, you won’t find pieces of iron familiar to us there, but iron is still there in the form of very small particles not visible to the eye. When these tiny particles of iron come into contact with air, more precisely, with the oxygen in the air, they begin to darken. To make it clear to the baby what is happening, compare the darkening of the apple with rust.

Second experience. Keep your little one entertained with another interesting lemon fun. Squeeze a little lemon juice into the bowl, give it to the child White list paper and a cotton swab and offer to write a letter for dad or draw something. Let the manuscript dry. Now it became impossible to read what was written or see what was drawn. Heat a sheet of paper well over a table lamp or steam. The inscription will not force itself to beg for a long time and will become noticeable. And you can also write a "secret" letter with ordinary milk. Dry the paper with milk "ink", and then iron it properly with a hot iron. Brown letters will appear on the paper. Sometimes it happens that the "lemon" letter does not show up well for a couple. Then it also makes sense to iron it. If the kid likes the idea, you can write secret messages to each other indefinitely.

Amazing iodine!

By the way, have you already shown the kid color reaction between ordinary potato starch and iodine?

We take a white starch suspension or starch paste, drip a drop of brown iodine and get a wonderful dark blue color. Well, isn't it a miracle? Here's another way to write a "secret" letter.

Together with the baby, prepare a starch paste: dilute a teaspoon of starch a small amount cold water and, stirring vigorously, pour boiling water from the kettle. The mixture will thicken and become clear. We dip a cotton swab, a toothpick or a brush into the paste and write on paper. The developer in this case will be the already familiar iodine.

To 4-5 teaspoons of water, add half a teaspoon of iodine and use a foam sponge to lightly moisten the paper with this mixture. Iodine will react with starch, and our invisible inscription will turn blue.

Miracle crystals!

Probably, crystals were grown in childhood, if not all, then many. Let's now do this beautiful and interesting experience along with your baby. It does not require a lot of time to prepare, but it will occupy the attention of the crumbs for a long time. Very beautiful crystals are obtained from blue vitriol. But, due to the special toxicity of this substance, it will not suit us for children's experiments. To get started, try growing a crystal from ordinary salt.

We'll need liter jar two-thirds full hot water. We prepare a supersaturated saline solution by dissolving the salt until it can no longer dissolve. Now we will build the basis for our future crystal. Among the salt crystals, select the largest one and tie it to a nylon thread. This work is delicate, so her mother does it, and the baby watches with bated breath. Attach the other end of the thread to a pencil, place it on the neck of the jar, and dip the thread with a grain into the solution. Put the jar in a place where the baby can easily observe it, and explain to him that you can’t disturb the solution, you can only look. Otherwise, nothing will come of it. Crystal growth is a slow process.

Gradually, salt crystals will settle on our salt grain, and it will increase. In a couple of weeks the spectacle will be impressive enough. If you didn’t succeed in tying a salt crystal on a thread, try lowering a metal paper clip or carnation. They are attached in the same way. Or you can try growing sugar crystals. The whole preparation procedure is exactly the same, only now sweet crystals will appear on the paper clip and thread, which you can even try.

If these and others like them are the very first, the most simple experiments take the baby, you can go further.

On sale there is literature on this topic, and sets of devices and reagents for young physicists and chemists.

Research interest, if it arises, must certainly be supported and developed. In the future, he will serve the baby well. And maybe small. home laboratory whether in the kitchen, in the nursery, on the balcony, in the country will be the beginning of large and serious experiments of your wonderful scientist.

Who didn't believe in miracles as a child? To have fun and informative time with your baby, you can try to carry out experiments from entertaining chemistry. They are safe, interesting and educational. These experiments will answer many children's "why" and arouse interest in science and knowledge of the world. And today I want to tell you what experiments for children at home can be organized by parents.

pharaoh snake

This experiment is based on increasing the volume of the mixed reagents. In the process of burning, they transform and, wriggling, resemble a snake. The experiment got its name thanks to the biblical miracle, when Moses, who came to the pharaoh with a request, turned his rod into a snake.

Experience will require the following ingredients:

• ordinary sand;
• ethanol;
• crushed sugar;
• baking soda.

We impregnate the sand with alcohol, after that we form a small hill out of it and make a recess at the top. Then mix with a small spoon powdered sugar and a pinch of soda, then we fall asleep everything in an impromptu "crater". We set fire to our volcano, the alcohol in the sand begins to burn out, and black balls form. They are a decomposition product of soda and caramelized sugar.

After all the alcohol has burned out, the sand slide will turn black and a writhing "black pharaoh's snake" will form. This experiment looks more impressive with the use of real reagents and strong acids, which can only be used in a chemical laboratory.

You can do it a little easier and buy a calcium gluconate tablet at the pharmacy. Set it on fire at home, the effect will be almost the same, only the “snake” will quickly collapse.

Magic lamp

In stores, you can often see lamps, inside which a beautiful illuminated liquid moves and shimmers. Such lamps were invented in the early 60s. They work on the basis of paraffin and oil. At the bottom of the device is a built-in conventional incandescent lamp that heats the descending molten wax. Part of it reaches the top and falls, the other part heats up and rises, so we see a kind of “dance” of paraffin inside the container.

In order to carry out a similar experience at home with a child, we need:

• any juice;
• vegetable oil;
• tablets - pops;
• beautiful container.

We take a container and fill it with juice more than half. Add vegetable oil on top and throw a pop-up tablet there. It begins to “work”, the bubbles rising from the bottom of the glass capture the juice in themselves and form a beautiful seething in the oil layer. Then the bubbles that reach the edge of the glass burst, and the juice falls down. It turns out a kind of "cycle" of juice in a glass. Such magic lamps are absolutely harmless, unlike paraffin lamps, which a child can accidentally break and burn himself.

Balloon and Orange: An Experience for Toddlers

What will happen to a balloon if you drop orange or lemon juice on it? It will burst as soon as drops of citrus touch it. And then you can eat an orange with your baby. It's very entertaining and fun. For the experience, we need a couple of balloons and citrus. We inflate them and let the baby drip fruit juice on each and see what happens.

Why does the ball burst? It's all about the special chemical substance- limonene. It is found in citrus fruits and is often used in the cosmetics industry. When the juice comes into contact with the rubber of the balloon, a reaction occurs, limonene dissolves the rubber and the balloon bursts.

sweet glass

Amazing things can be made from caramelized sugar. In the early days of cinema, most fight scenes used this edible sweet glass. This is because it is less traumatic for actors during filming and is inexpensive. Its fragments can then be collected, melted down and made into props for the film.

Many in childhood made sugar cockerels or cream fudge, glass should be made according to the same principle. Pour water into a saucepan, heat a little, the water should not be cold. After that we fall asleep there granulated sugar and bring to a boil. When the liquid boils, cook until the mass begins to gradually thicken and bubble strongly. The melted sugar in the container should turn into a viscous caramel, which, if lowered into cold water, will turn into glass.

Pour the prepared liquid onto a baking sheet previously prepared and greased with vegetable oil, cool and the sweet glass is ready.

During the cooking process, dye can be added to it and cast into any interesting shape, and then treat and surprise everyone around.

Philosopher's nail

This entertaining experience based on the principle of iron coppering. Named by analogy with a substance that, according to legend, could turn everything into gold, and was called the philosopher's stone. To conduct the experiment, we will need:

• iron nail;
• a fourth of a glass of acetic acid;
• edible salt;
• soda;
• a piece of copper wire;
• glass container.

We take glass jar and pour acid, salt there and stir well. Be careful, vinegar is harsh bad smell. It can burn tender Airways child. Then we put the copper wire into the resulting solution for 10-15 minutes, after some time we lower the iron nail previously cleaned with soda into the solution. After some time, we can see that a copper coating has appeared on it, and the wire has become shiny as new. How could this happen?

Copper reacts with acetic acid, copper salt is formed, then copper ions on the surface of the nail change places with iron ions and form a plaque on its surface. And the concentration of iron salts increases in the solution.

Copper coins are not suitable for the experiment, since this metal itself is very soft, and to make the money stronger, its alloys with brass and aluminum are used.

Copper products do not rust over time, they are covered with a special green coating - patina, which prevents it from further corrosion.

DIY soap bubbles

Who didn't love blowing bubbles as a child? How beautifully they shimmer and burst merrily. You can just buy them at the store, but it will be much more interesting to create your own solution with your child and then blow bubbles.

It should be said right away that the usual mixture of laundry soap and water will not work. It produces bubbles that quickly disappear and are poorly blown. Most affordable way to prepare such a substance, mix two glasses of water with a glass of dish detergent. If sugar is added to the solution, then the bubbles become stronger. They will for a long time fly and not burst. A huge bubbles, which can be seen on stage with professional artists, are obtained by mixing glycerin, water and detergent.

For beauty and mood, you can mix it into the solution food coloring. Then the bubbles will glow beautifully in the sun. You can create multiple different solutions and use them in turn with the child. It is interesting to experiment with color, and create your own, new shade soap bubbles.

You can also try mixing the soap solution with other substances and see how they affect the blisters. Maybe you will invent and patent some new kind of your own.

Spy ink

This legendary invisible ink. What are they made from? Now there are so many films about spies and interesting intellectual investigations. You can invite your child to play a little secret agents.

The meaning of such ink is that they cannot be seen on paper with the naked eye. Only by applying a special effect, for example, heating or chemical reagents, can a secret message be seen. Unfortunately, most recipes for making them are ineffective and such ink leaves marks.

We will make special ones that are difficult to see without special identification. For this you will need:

• water;
• spoon;
• baking soda;
• any source of heat;
• stick with cotton at the end.

Pour warm liquid into any container, then, while stirring, pour baking soda into it until it stops dissolving, i.e. the mixture will reach a high concentration. We put a stick with cotton on the end there and write something on paper with it. Let's wait until it dries, then bring the leaf to a lit candle or gas stove. After a while, you can see how the yellow letters of the written word appear on the paper. Make sure that during the development of the letters the leaf does not catch fire.

Fireproof money

This is a well-known and old experiment. For it you will need:

• water;
• alcohol;
• salt.

Take a deep glass container and pour water into it, then add alcohol and salt, stir well so that all the ingredients are dissolved. For ignition, you can take ordinary pieces of paper, if you don’t mind, then you can take a bill. Just take a small denomination, otherwise something may go wrong in the experience and the money will be spoiled.

Put strips of paper or money in a water-salt solution, after a while they can be removed from the liquid and set on fire. You can see that the flame covers the entire banknote, but it does not light up. This effect is explained by the fact that the alcohol in the solution evaporates, and the wet paper itself does not light up.

wish fulfilling stone

The process of growing crystals is very exciting, but time consuming. However, what you get as a result will be worth the time spent. The most popular is the creation of crystals from table salt or sugar.

Consider growing a "wish stone" from refined sugar. For this you will need:

• drinking water;
• granulated sugar;
• paper sheet;
• thin wooden stick;
• small container and glass.

Let's make a preparation first. To do this, we need to prepare a sugar mixture. Pour some water and sugar into a small container. We wait until the mixture boils, and boil until a syrupy state is formed. Then we lower the wooden stick there and sprinkle it with sugar, you need to do this evenly, in this case the resulting crystal will become more beautiful and even. Leave the base for the crystal overnight to dry and harden.

Let's prepare the syrup solution. Pour water into a large container and fall asleep, slowly stirring, sugar there. Then, when the mixture boils, boil it to the state of a viscous syrup. Remove from fire and let cool.

Cut out circles from paper and attach them to the end of a wooden stick. It will become a lid on which a wand with crystals is attached. We fill the glass with a solution and lower the workpiece there. We wait for a week, and the "stone of desires" is ready. If you put a dye in the syrup when cooking, it will turn out even more beautiful.

The process of creating crystals from salt is somewhat simpler. Here it will only be necessary to monitor the mixture and periodically change it in order to increase the concentration.

First of all, we create a blank. Pour into a glass container warm water, and gradually stirring, pour the salt until it stops dissolving. We leave the container for a day. After this time, you can find many small crystals in the glass, choose the largest one and tie it to a thread. Make a new salt solution and put a crystal there, it must not touch the bottom or the edges of the glass. This can lead to unwanted deformations.

After a couple of days, you can see that he has grown. The more often you change the mixture, increasing the concentration of salt content, the faster you can grow your wish stone.

glowing tomato

This experiment should be strictly under the supervision of adults, as it uses harmful substances. The glowing tomato that will be created during this experiment is strictly forbidden to eat, it can lead to death or severe poisoning. We will need:

• ordinary tomato;
• syringe;
• sulfuric matter from matches;
• bleach;
• hydrogen peroxide.

We take a small container, put the previously prepared match sulfur there and pour in the bleach. We leave all this for a while, after which we draw the mixture into a syringe and inject it inside the tomato with different parties so that it glows evenly. For start chemical process hydrogen peroxide is needed, which we introduce through the trace from the petiole from above. We turn off the light in the room, and we can enjoy the process.

Egg in Vinegar: A Very Simple Experience

This is a simple and interesting ordinary acetic acid. For its implementation, you will need a boiled chicken egg and vinegar. Take a transparent glass container and lower the egg in the shell into it, then fill it to the top with acetic acid. You can see how bubbles rise from its surface, this is happening chemical reaction. After three days, we can observe that the shell has become soft, and the egg is elastic, like a ball. If you point a flashlight at it, you can see that it glows. It is not recommended to conduct an experiment with a raw egg, since the soft shell may break when squeezed.

Do-it-yourself slime from PVA

This is a fairly common strange toy of our childhood. Currently, it is quite difficult to find it. Let's try to make slime at home. Its classic color is green, but you can use whatever you like. Try mixing several shades and create your own unique color.

For the experiment we need:

• glass jar;
• several small glasses;
• dye;
• PVA glue;
• regular starch.

Let's prepare three identical glasses with solutions that we will mix. Pour PVA glue into the first, water into the second, and starch into the third. First, pour water into the jar, then add glue and dye, mix everything thoroughly and then add starch. The mixture must be quickly mixed so that it does not thicken, and you can play with the finished slime.

How to quickly inflate a balloon

Soon the holiday and you need to inflate a lot of balloons? What to do? This unusual experience will help to facilitate the task. For him, we need a rubber ball, acetic acid and ordinary soda. It must be carried out carefully in the presence of adults.

Pour a pinch of baking soda into balloon ik and put it on the neck of the bottle of acetic acid so that the soda does not spill out, straighten the ball and let its contents fall into the vinegar. You will see how the chemical reaction will take place, it will begin to foam, releasing carbon dioxide and inflating the balloon.

That's all for today. Do not forget that it is better to conduct experiments for children at home under supervision, it will be both safer and more interesting. See you soon!

Morning. Mom cooks porridge for breakfast, the baby "plays" in the room. Suspicious silence. Mom, alert, goes to see what is happening, and at this time the little one moved a chair to the table, climbed on it and tries to build a pyramid on it from a stool and a bench. Mom, without wasting a second, rushes to save the baby. Then a short lecture on the topic that it is not necessary to do this and an unpleasant smell from the kitchen. All the porridge is burnt. Common situation. Often a mother has to be torn between the nursery and the kitchen, trying to cook not only something especially tasty, but even regular food. What to do in such a situation? Take the baby with you. However, the kitchen is not the safest place in the house. How to make sure that the child is busy, develops, explores the world, and the mother has time to do her own thing?

Science will come to the rescue. While you are cooking in the kitchen, you can teach your baby the basics of chemistry, physics, mathematics, develop fine motor skills and encourage him to scientific research, play metal building kit with different mechanical experiences. Constructor examples http://mega-euro-kids.ru/metallicheskij-detskij-konstruktor

Getting to know the shape and size, or playing Cinderella

In a bowl, mix semolina buckwheat and beans. Give your baby a sieve, colander and slotted spoon. And offer to separate one type of cereal from another. If this mixture is poured into a sieve, semolina will pass through the cells, and the rest of the species will not be able to. If you use a slotted spoon or take a colander, then buckwheat will seep into the holes, and the beans will remain. If you sprinkle the same semolina on a tray, then you can draw different figures with your finger.
How to separate salt and pepper, or we continue to play Cinderella
With cereal, everything is simple. But do you know how to separate salt and pepper? There is no way around static electricity. Mix a teaspoon of salt and pepper in a saucer. And invite the baby to separate them with a balloon. It is necessary to inflate the balloon, rub it on a woolen sweater or scarf. You can even say some “magic words” at the same time, bring the ball to the saucer and ... before the eyes of the astonished baby, the pepper will begin to stick to the ball, and the salt will remain in place.

Dancing rice cereal

With the help of the same balloon, you can make rice flakes “jump”. We operate in the same way. We pour cereal into a bowl, inflate a balloon, rub it on wool with “magic words” and bring it to the cereal. The flakes begin to move and are attracted to the ball. After a while, the static electricity will wear off and the flakes will fall.

Making dough and blowing up a balloon

It would seem that it can be surprising in the preparation of the dough. And if you use yeast to inflate a balloon? Mix two teaspoons of dry yeast with two tablespoons of warm water, add another teaspoon of sugar, pour the mixture into a bottle and pull a balloon over the neck. Now you need to put the bottle in a bowl with warm water, wait half an hour and ... the balloon will begin to inflate "by itself". In fact, it will be inflated with carbon dioxide, which will begin to release as the yeast ferments. Now we take a baked pancake or a piece of pie, or if we didn’t have time to bake it all, then just a piece of store-bought bread, and we offer the child to examine it into the light. Turns out there are holes. It can be explained that they are obtained because yeast was put in the dough, they began to emit carbon dioxide bubbles, so the dough begins to grow, and even after buns, loaves or pancakes are baked from it, holes from these bubbles will still remain. Now we take butter, a plastic disposable knife and invite the child to cook for himself delicious sandwich by smearing the holes in the bread with butter.

Do-it-yourself volcano

We often use baking soda to make dough. It is with its help that we will arrange a real “volcanic eruption” at home. Let's take colored paper, twist a cone out of it, make a hole at the top and put a glass bottle or a narrow jar inside. Outside, you can make a creamy topping on sour cream with jam. Now let's prepare the "volcanic mixture". A tablespoon of baking soda, a little food coloring (if this is not available, you can use beetroot juice, or you can do without it altogether). Add a teaspoon of dishwashing detergent (be careful that the child does not take this mixture in his mouth) and pour in half a glass of lemon juice (real squeezed from a lemon). Before the eyes of the astonished public, the volcano begins to erupt. First, a hiss is heard, and then colored foam suddenly pours out of the "vent".

We play spies

Use the lemon to make invisible ink. We squeeze the juice from the lemon in a saucer, dip a brush into it and draw something on white paper. After the sheet has dried, rub it with wax crayon, and the picture will appear. You can also write a secret message with milk. Milk ink should dry well. If you iron the sheet with an iron, you can read what is written or see a secret drawing. There is another way. If suddenly you are making jelly, then dilute a teaspoon of starch with a small amount of cold water, and then add boiling water from the kettle to it, remembering to stir all the time. Get a transparent paste.
With these "inks" you can also write or draw something on a piece of paper. Now we will develop the inscription using a special solution for 5 teaspoons of water, half a teaspoon of iodine. Soak a sponge in this solution, and then lightly moisten the paper. The starch message will turn blue and can be seen.

Grape submarine

We take a transparent glass or a small glass jar. Pour soda into it and throw in a grape. We start observing. First, the grape sinks to the bottom. Then it rises on its own, descends again and rises until the gases from the liquid are exhausted. You can add a new portion of soda and then the grape will dive again. Why is this happening? When a grape falls into a glass, it sinks to the bottom because it is heavier than water. But then air bubbles land on it, and when a lot of them are attached, they, like air balloons lift the grape to the surface. At the top, the bubbles burst over time, and the grape sinks to the bottom.

litmus strips

Very interesting experience with litmus papers. You can cook them yourself. Finely chop half a head of red cabbage. Pour it with water and bring to a boil. Now the prepared mixture must be filtered through a sieve and leave the solution to cool. After the liquid has cooled, lower the cut strips of paper into it and leave them to dry. Now the most interesting. We take three glasses. Pour into the first lemon juice, in the second water, in the third we make an alkaline solution (add half a teaspoon to the water baking soda). We lower the indicator strip into the first glass. She is dyed red. We lower the strip into the second glass, where there is water, its color does not change. And if you lower it into the third glass, where the soda solution is, then the color of the indicator strip will turn green.

Making a magic wand

It's time to wash the dishes - let's try ourselves in the role of the master of water. We take a plastic ruler. Rub it on a wool sweater or hat. We open the water in the tap with a thin stream, and bring a ruler to the side of it. The jet of water will begin to deviate towards the ruler. The smaller the water jet, the more noticeable its movement. If the ruler touches the water, it will lose electrostatic electricity and will no longer be able to control the water.

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We have a lot of things in our kitchen that you can put interesting experiments for children. Well, for myself, to be honest, to make a couple of discoveries from the category of “how I didn’t notice this before.”

website chose 9 experiments that will delight children and raise many new questions in them.

1. Lava lamp

Need: Salt, water, a glass of vegetable oil, a few food colors, a large transparent glass or glass jar.

Experience: Fill a glass 2/3 with water, pour vegetable oil into the water. The oil will float on the surface. Add food coloring to water and oil. Then slowly add 1 teaspoon of salt.

Explanation: Oil is lighter than water, so it floats on the surface, but salt is heavier than oil, so when you add salt to a glass, the oil and salt begin to sink to the bottom. As the salt breaks down, it releases oil particles and they rise to the surface. Food coloring will help make the experience more visual and spectacular.

2. Personal rainbow

Need: A container filled with water (bath, basin), flashlight, mirror, sheet of white paper.

Experience: Pour water into the container and put a mirror on the bottom. We direct the light of a flashlight to the mirror. The reflected light must be caught on paper, on which a rainbow should appear.

Explanation: The beam of light consists of several colors; when it passes through the water, it decomposes into its component parts - in the form of a rainbow.

3. Volcano

Need: Tray, sand, plastic bottle, food coloring, soda, vinegar.

Experience: A small volcano should be molded around a small plastic bottle made of clay or sand - for entourage. To cause an eruption, you should pour two tablespoons of soda into the bottle, pour in a quarter cup of warm water, add a little food coloring, and finally pour in a quarter cup of vinegar.

Explanation: When baking soda and vinegar come into contact, a violent reaction begins with the release of water, salt and carbon dioxide. Gas bubbles and push the contents out.

4. Grow crystals

Need: Salt, water, wire.

Experience: To get crystals, you need to prepare a supersaturated salt solution - one in which when a new portion is added, the salt does not dissolve. In this case, you need to keep the solution warm. To make the process go better, it is desirable that the water be distilled. When the solution is ready, it must be poured into a new container to get rid of the debris that is always in the salt. Further, a wire with a small loop at the end can be lowered into the solution. Put the jar in a warm place so that the liquid cools more slowly. After a few days, beautiful salt crystals will grow on the wire. If you get the hang of it, you can grow quite large crystals or patterned crafts on twisted wire.

Explanation: As the water cools, the solubility of the salt decreases, and it begins to precipitate and settle on the walls of the vessel and on your wire.

5. Dancing coin

Need: A bottle, a coin that can be used to cover the neck of a bottle, water.

Experience: An empty unclosed bottle should be put in the freezer for a few minutes. Moisten a coin with water and cover the bottle taken out of the freezer with it. After a few seconds, the coin will begin to bounce and, hitting the neck of the bottle, make sounds similar to clicks.

Explanation: The coin is lifted by air, which has compressed in the freezer and occupied a smaller volume, and now has heated up and begun to expand.

6. Colored milk

Need: Whole milk, food colorings, liquid detergent, cotton buds, plate.

Experience: Pour milk into a plate, add a few drops of dyes. Then you need to take a cotton swab, dip it in detergent and touch the wand to the very center of the plate with milk. The milk will move and the colors will mix.

Explanation: Detergent reacts with fat molecules in milk and sets them in motion. That is why skimmed milk is not suitable for the experiment.

7. Fireproof bill

Need: Ten-rouble note, tongs, matches or lighter, salt, 50% alcohol solution (1/2 part alcohol to 1/2 part water).

Experience: IN alcohol solution add a pinch of salt, immerse the bill in the solution so that it is completely soaked. Remove the bill from the solution with tongs and allow excess liquid to drain. Set fire to a bill and watch it burn without burning.

Explanation: Combustion ethyl alcohol water, carbon dioxide and heat (energy) are produced. When you set fire to a bill, alcohol burns. The temperature at which it burns is not enough to evaporate the water that the paper bill is soaked in. As a result, all the alcohol burns out, the flame goes out, and the slightly damp ten remains intact.

9 Camera Obscura

You will need:

A camera that supports slow shutter speeds (up to 30 s);

Large sheet of thick cardboard;

Masking tape (for pasting cardboard);

A room with a view of anything;

Sunny day.

1. We seal the window with cardboard so that the light does not come from the street.

2. In the center we make an even hole (for a room 3 meters deep, the hole should be about 7-8 mm).

3. When the eyes get used to the darkness, an inverted street will be found on the walls of the room! The most visible effect will be on a bright sunny day.

4. Now the result can be shot on a camera at a slow shutter speed. A shutter speed of 10-30 seconds is fine.

You will need: whole milk high fat, food colorings different colors, any liquid detergent, cotton buds, a plate.

Milk should be whole, not skimmed. Pour milk into a bowl. Add a few drops of each dye to it. Try to do this carefully so as not to move the plate itself.

Then take a cotton swab, dip it in the detergent and touch it to the milk in the very center of the plate. You will like the result - colored stripes will begin to move on the surface of the milk!

The fact is that milk is made up of molecules. different type: fats, proteins, carbohydrates, vitamins and minerals. When a detergent is added to milk, several processes occur simultaneously. First, the detergent reduces surface tension, and due to this, food colors begin to move freely over the entire surface of the milk. But most importantly, the detergent reacts with the fat molecules in milk and sets them in motion. Something like this:

Growing crystals

The simplest and safe way get acquainted with the crystallization process - grow your own crystal from sodium chloride, that is, ordinary table salt.

It's very simple: take hot water, table salt and prepare a supersaturated solution. When the salt ceases to dissolve, lower the thread or wire into the container. After a few days, salt crystals will begin to form on the "seed".

Why? When a supersaturated salt solution is cooled, water evaporates. Accordingly, the salt (crystallizing substance) is first adsorbed on the surface of the "seed", then on the surface of the already formed crystal, and then embedded in its crystal lattice.

Making a Volcano

A reaction known to us under the culinary name "quench the soda" or under the chemical name "neutralization". If soda is poured into a saucer or plate (one or two tablespoons) and vinegar is carefully poured into it, you will see a real “volcanic eruption”. But, be careful not to bend over and keep the child away from the container in which the reaction takes place.

What happens: sodium bicarbonate (soda) reacts with acids (vinegar) to form salt and carbonic acid, which, in turn, immediately breaks down into carbon dioxide and water, which, in fact, causes an “eruption” (bubbles and hiss).

rubber chicken bones

Everything is very simple here! We take clean chicken bones(thin, we're not going to spend too much time on the experiment), soak them in vinegar. After a while, the bones will become soft, like rubber.

The fact is that vinegar reacts with calcium contained in the bones. And, as you know, it is calcium that makes bones strong, hard, just the way we need them! A great experiment for those who abuse coffee or do not like dairy products, isn't it?

These simple experiments will allow the whole family not to get bored at home in bad weather, and will help to captivate the child with the wonderful science of chemistry.

And you can also introduce children to science