The Ghostbusters remake is coming out very soon, and this is a great excuse to rewatch the old film and study non-Newtonian fluids. One of the heroes of the film, the stupid ghost Lizun, - good image for visualization. This is a character who loves to eat, and he can also penetrate walls.

We will need:

• potato,
• tonic.

What we do

Cut the potatoes very finely (can be chopped in a food processor) and pour hot water. After 10-15 minutes, drain the water through a sieve into a clean bowl and set aside. A sediment will appear at the bottom - starch. Drain the water; the starch will remain in the bowl. In principle, you will already have a non-Newtonian fluid. You can play with it and watch how it hardens under your hands and becomes liquid on its own. You can also add food coloring for bright color.

Trevor Cox/Flickr.com

Now let's add a little magic.

The starch needs to be dried (leaved for a couple of days). And then add tonic to it and make a kind of dough that is easy to pick up. It will retain its consistency in your palms, but if you stop and stop kneading it, it will begin to spread.

If you enable ultraviolet lamp, then you and your child will see how the dough begins to glow. This is due to the quinine found in tonic water. It looks magical: a glowing substance that behaves as if it violates all the laws of physics.

2. Get superpowers

Comic book heroes are especially popular now, so your child will love feeling like the powerful Magneto, who can control metals.

We will need:

• printer toner,
• magnet,
• vegetable oil.

What we do

From the very beginning, be prepared for the fact that after this experiment you will need a lot of napkins or rags - it will be quite dirty.

In no large capacity add about 50 ml of toner for laser printers. Add two tablespoons of vegetable oil and mix very well. Done - you have in your hands a liquid that will react to a magnet.

Jerald San Hose/Flickr.com

You can attach a magnet to the container and watch how the liquid literally sticks to the wall, forming a funny “hedgehog”. It will be even more interesting if you find a board on which you don’t mind pouring a little black mixture, and invite your child to use a magnet to control the drop of toner.

3. Turn milk into a cow

Invite your child to turn liquid into solid without resorting to freezing. This is a very simple and impressive experience, although you will have to wait a couple of days to get the results. But what an effect!

We will need:

• cup ,
• vinegar.

What we do

Heat a glass of milk in microwave oven or on the stove. We don't boil. Then you need to add a tablespoon of vinegar to it. Now let's start stirring things up. Actively move the spoon in the glass to see white clots appear. This is casein, a protein found in milk.

When there are a lot of clots, drain the mixture through a sieve. Whatever remains in the colander needs to be shaken, then placed on a paper towel and dried a little. Then start kneading the material with your hands. It will look like dough or clay. At this stage, you can add food coloring or glitter to make the white mass brighter and more interesting for your baby.

Invite your child to make something from this material - a figurine of an animal (for example, a cow) or some other object. But you can just put the mass in plastic mold. Leave to dry for a day or two.

When the mass dries, you will have a figurine made of very hard hypoallergenic material. This type of “homemade plastic” was used until the 1930s. Casein was used to make jewelry, accessories, and buttons.

4. Control snakes

Getting vinegar and baking soda to react is just about the most boring experience imaginable. “Volcanoes” and “fizzy drinks” will not be of interest to modern children. But you can invite your child to become a “snake lord” and show how acid and alkali actually react.

We will need:

• pack of gummy worms,
• soda,
• vinegar.

What we do

Take two large transparent glasses. Pour water into one and add soda. Mix. Open the package of gummy worms. It’s better to cut each of them lengthwise and make them thinner. Then the experience will be more spectacular.

Thin worms should be placed in a mixture of water and soda and mixed. Set aside for 5 minutes.

Pour vinegar into another glass. Now we add to this vessel the worms that were in the glass with soda. Because of the soda, bubbles will be visible on their surface. This means there is a reaction. The more worms you add to the glass, the more gas will be released. And after some time, the bubbles will lift the worms to the surface. Add more soda - the reaction will be more active and the worms themselves will begin to crawl out of the glass. Cool!

5. Make a hologram like in Star Wars

Of course, it is difficult to create a real hologram at home. But its likeness is quite real and not even very difficult. You will learn to use the properties of light and turn 2D pictures into three-dimensional images.

We will need:

• smartphone,
• CD box,
• stationery knife,
• scotch,
• paper,
• pencil.

What we do

You need to draw a trapezoid on paper. The drawing can be seen in the photo: the length of the lower side of the trapezoid is 6 cm, the upper side is 1 cm.

BoredPanda.com

Carefully cut out a trapezoid from paper and take out the CD box. We need the transparent part of it. Attach the pattern to the plastic and use a utility knife to cut a trapezoid out of the plastic. Repeat three more times - we will need four identical transparent elements.

Now they need to be glued together with tape so that it looks like a funnel or a truncated pyramid.

Take your smartphone and run one of the such videos. Place the plastic pyramid with the narrow part down in the center of the screen. Inside you will see a “hologram”.

Giphy.com

You can start a video with characters from Star Wars and, for example, recreate the famous recording of Princess Leia or admire his own miniature BB-8.

6. Get away with it

Every child can build a sand castle on the seashore. How about we line it up under water? Along the way, you can learn the concept of “hydrophobic.”

We will need:

• colored sand for aquariums (you can also take regular sand, but it needs to be washed and dried),
• hydrophobic shoe spray.

What we do

Carefully pour the sand onto a large plate or baking sheet. We apply a hydrophobic spray to it. We do this very carefully: spray, mix, repeat several times. The task is simple - make sure that every grain of sand is enveloped in a protective layer.

University of Exeter/Flickr.com

When the sand dries, collect it in a bottle or bag. Take a large container for water (for example, a wide-mouthed jar or an aquarium). Show your child how hydrophobic sand “works”. If you pour it in a thin stream into water, it will sink to the bottom but remain dry. This is easy to check: let the baby take some sand from the bottom of the container. As soon as the sand rises from the water, it will crumble in the palm of your hand.

7. Keep information secret better than James Bond

Writing secret messages with lemon juice is a thing of the past. There is another way to make invisible ink, which also allows you to learn a little more about the reaction of iodine and starch.

We will need:

• paper,
• brush.

What we do

First, cook the rice. The porridge can be eaten later, but we need a decoction - it contains a lot of starch. Dip your brush into it and write a secret message on the paper, such as “I know who ate all the cookies yesterday.” Wait for the paper to dry. Starchy letters will be invisible. To decipher the message, you need to moisten another brush or cotton swab in a solution of iodine and water and run it over what is written. Due to the chemical reaction, blue letters will begin to appear on the paper. Voila!

Children are great people. By their very nature, they are aimed at understanding the world, and until a certain age, the world is ready to give them discoveries almost every day. Children are ready for the most risky experiments in order to answer the questions “How?”, “Why?”, “What will happen?” We, parents, out of fear for their safety and the safety of the objects surrounding our children, try to limit the flight of their imagination, especially if we're talking about about preschoolers and primary schoolchildren aged 7-8 years.

Preserving this curiosity and inquisitiveness is very important; it is this trait that will bring the child both deep knowledge and the ability to implement it. Entertaining experiments will force the child to consciously read physics or chemistry textbooks, in an effort to understand and explain the results of the experiment.

Therefore, responsible parents strive to support children in their desire to discover chemical, physical, biological and other laws themselves. Having caught the demand, stores offer to buy various children's kits to conduct experiments and experiments for children 7-8 years old at home.

You can buy these kits, but children can easily conduct many fun and interesting scientific experiments with their parents themselves, creating the necessary kits from improvised materials at home. At home you can do experiments in chemistry, physics, biology. You can do at least 10 experiments with Coca-Cola alone. The main thing is to teach little researchers safety rules.

Most of the experiences and experiments for children that parents can read about and offer to kids for practice are completely safe. But many children at 8, and even more so 10 years old, are already quite free to find videos on the Internet where slightly older children demonstrate their experiments, and not all of them, even with Coca-Cola, are safe for a beginner.

Or maybe your young researcher will decide to conduct chemical experiment own development. Therefore, rule number one, which, first of all, needs to be taught to children is to always coordinate upcoming scientific experiments with an adult.

• Before doing this, carefully read the instructions for the experiment. All sets sold are supplied with them.
• The place for experiments must be carefully selected and well prepared. Remove all unnecessary items, especially flammable materials and fragile items. There should be enough light, nearby water, and the possibility of ventilation.
• Be careful when handling fire, hot or sharp objects.
• Use separate dishes for experiments. After use, wash and put it away thoroughly.
• Do not put anything in your mouth, taste it or play with the products used or received.
• If your hands get dirty, wash them immediately so as not to rub your face and eyes with dirty hands.
• Do not lean close to the experiment site to avoid splashes, sparks, etc. do not come into contact with skin or eyes.
• At the end of the experiment, we carefully clean everything, wash our hands, and if necessary, ventilate the room.
• Carefully pour used liquids into the sink, turning on cold water so that she dilutes it.

But still simple experiments with fire or chemicals, even something as common at home as vinegar, children should only do it under the supervision of an adult.

Experiments for children! Experiment for children No. 1 – Rainbow water

Boat on a soap engine

You don't have to buy complicated kits for this experience. Enough water, liquid soap and plastic corner. Using scissors, cut out a triangular boat with a slot from a corner or film and round hole in the middle. This is quite feasible for children 7-8 years old. Then we lower the resulting boat into a vessel with water and drop liquid soap into the hole. The ship begins to move quickly through the water. And so on after every drop of soap.

Soda Experience

This simple and fun activity will help engage children's attention to physics concepts such as density, volume and weight. He doesn't need it special sets, it is enough to buy several metal cans of soda of the same volume. For example, buy Sprite, Coca-Cola, Pepsi and Fanta, and ask your child the question: “What will happen to them if you put them in water? Will they drown or not?

You can even bet on how the next jar will behave. Then carefully lower the jars into a container of water and observe. Some jars sink to the bottom, while others float in it. Although a child of 7 or even 10 years old does not yet learn physics or chemistry, this visual experience will help to remember that objects with the same volume can have different weights and different densities.

Paper cover

This scientific experience looks like a magic trick. Take a glass of water, pour water into it, press a piece of thick paper on top and carefully turn the glass over. The water doesn't spill out! The paper remains pressed to the glass, as if glued. The explanation for the secret of this experiment is that air presses on the paper.

Homemade rainbow using water and mirror

You can delight your children by making them feel like a wizard by creating your own rainbow. To do this, the child immerses a small mirror in water and shines a flashlight on it. On White list paper we catch the reflection and there it is - a rainbow!

Rene Descartes' experiment or pipette diver

It is believed that this interesting experiment was first made by the 16th century physicist and mechanic from France, Rene Descartes. We will not repeat his experience exactly, because today there are plastic bottles. In one of them we fill water almost to the very edges and lower the pipette there. We first fill the pipette with a little water, so that when immersed in the bottle it floats, with its upper rubber end slightly protruding from the water.

Close the bottle and squeeze it. The pipette goes to the bottom. Let go of the sides of the bottle and the pipette floats up. When you squeeze the bottle, the pressure of the water in it increases, and it penetrates into the pipette. It becomes heavier and goes to the bottom. The pressure weakens and the air pushes out the water, the pipette becomes lighter again and floats up.

From glass to glass

This experiment can be done even by a 5-year-old child. One glass is filled with water and a strip of fabric is immersed in it, the second edge of which is lowered into empty glass. It is placed slightly lower than full, and gradually the water flows through the fabric from full to empty.

Coca-Cola experience

The Internet is full of videos where guys have the most different experiences with Coca-Cola. You can find 10 or 20 such experiments. Add sugar, Mentos candies, soda or salt, milk and dry ice to Coca-Cola and look at the result. With a child of 8–10 years old, it is quite possible to create a volcano out of Coca-Cola.

To do this, a tall glass or a small plastic bottle insert it into a dark paper cone that will represent a volcano. We put the volcano in the basin. Fill the vessel halfway with Coca-Cola and throw in the Mentos candies. Then we admire the volcanic eruption from a fountain of foam. The fountain from our volcano will be even higher if we add soda to Coca-Cola instead of candy.

Experiment Naughty ball. Simple experiments with a bottle

Parents of little fidgets can surprise them with experiments that can be carried out at home. Light, but at the same time surprising and delightful, they can not only diversify a child’s leisure time, but also allow them to look at familiar things with completely different eyes. And discover their properties, functions, purpose.

Young naturalists

Experiments at home, great for children under 10 years old - The best way help your child save up practical experience, which will be useful to him in the future.

Safety precautions when conducting experiments

To ensure that educational experiments are not overshadowed by troubles and injuries, it is enough to remember a few simple but important rules.

Safety comes first

1. Before working with chemicals, work surface need to be protected by covering it with film or paper. This will save parents from unnecessary cleaning and allow them to save appearance and functionality of furniture.
2. During work, you do not need to get too close to the reagents, bending over them. Especially if the plans are chemical experiments for young children that involve unsafe substances. The measure will protect the mucous membranes of the mouth and eyes from irritation and burns.
3. If possible you should use protective devices: gloves, glasses. They must be suitable in size for the child and not interfere with him during the experiment.

Simple experiments for little ones

Developmental experiences and experiments for very young children (or for children under 10 years old) are usually simple and do not require parents to have any special skills or rare or expensive equipment. But the joy of discovery and miracle, which is so easy to do with your own hands, will remain with him for a long time.

For example, children will be indescribably delighted by a real seven-color rainbow, which they can create themselves with the help of an ordinary mirror, a container of water and a sheet of white paper.

Rainbow in a Bottle Experience

To begin with, place a mirror at the bottom of a small basin or bathtub. Then, it is filled with water; and the light of the lantern is directed onto the mirror. After the light is reflected and passes through the water, it is decomposed into its component colors, becoming the same rainbow that can be seen on a sheet of white paper.

Another very simple and beautiful experiment can be carried out using ordinary water, wire and salt.

To begin the experiment, you need to prepare a supersaturated salt solution. Calculating the required concentration of a substance is quite simple: when required quantity salt in water, it stops dissolving when the next portion is added. It is very good to use warm distilled water for this purpose. To make the experiment more successful, ready solution You can also pour it into another container - this will remove dirt and make it cleaner.

Experience "Salt on a Wire"

When everything is ready, a small piece of copper wire with a loop at the end is lowered into the solution. The container itself is removed to a warm place and left there for a certain time. As the solution begins to cool, the solubility of the salt will decrease and it will begin to settle on the wire in the form beautiful crystals. You will be able to notice the first results within a few days. By the way, you can use not only ordinary, straight wire in the experiment: by twisting fancy figures from it, you can grow crystals of your own. different sizes and shapes. By the way, this experiment will give the child great idea New Year's toys in the form of real ice snowflakes - you just need to find a flexible wire and form a beautiful symmetrical snowflake out of it.

Invisible ink can also make a lasting impression on a child. It’s very simple to prepare them: just take a cup of water, matches, cotton wool, half a lemon. And a sheet on which you can write text.

Invisible ink you can buy ready-made

First, mix equal amounts of lemon juice and water in a cup. Then, a little cotton wool is wrapped around a toothpick or a thin match. The resulting “pencil” is dipped into the mixture in the resulting liquid; Then they can write any text on a piece of paper.

Even though the words on paper will be completely invisible at first, it will be very easy to manifest them. To do this, a sheet of already dried ink needs to be brought to the lamp. The written words will immediately appear on a heated sheet of paper.

Which child doesn't love balloons?

It turns out that even inflating an ordinary balloon can be very in an original way. To do this, dissolve one spoon of baking soda in a bottle of water. And in another cup, mix the juice of one lemon and three tablespoons of vinegar. Afterwards, the contents of the cup are introduced into the bottle (for convenience, you can use a small funnel). The ball needs to be put on the neck of the bottle as quickly as possible until chemical reaction won't end. During this time, carbon dioxide will be able to quickly inflate the balloon under pressure. To prevent the ball from jumping off the neck of the bottle, it can be secured with electrical tape or tape.

"Inflate the balloon" experiment

Colored milk looks very interesting and unusual, the colors of which will move, intricately mixing with each other. For this experiment, you need to pour some whole milk into a plate and add a few drops of food coloring to it. Individual areas of the liquid will become colored different colors, but the spots will remain motionless. How to set them in motion? Very simple. It is enough to take a small cotton swab and, after dipping it in detergent, bring it to the surface of the colored milk. Having reacted with milk fat molecules, the molecules detergent make him move.

Experience “Drawings on milk”

Important! Skim milk is not suitable for this experiment. Only whole ones can be used!

Surely all children have had the opportunity to observe funny air bubbles in a mineral or sweet water. But are they strong enough to lift a grain of corn or raisin to the surface? It turns out yes! To check this, just pour any sparkling water into a bottle, and then throw some corn or raisins into it. The child will see for himself how easily, under the influence of air bubbles, both corn and raisins will begin to rise up, and then, having reached the surface of the liquid, fall down again.

Experiments for older children

Older children (from 10 years old) can be offered more complex chemical experiments that require more components. These experiments are a little more difficult for older children, but children can already take part in them.

To maintain safety precautions, children under 10 years of age should conduct experiments under strict control adults, mainly in the role of spectator. Children over 10 years old can take a more active part in the experiments.

An example of such an experiment would be the creation lava lamp. Surely many children dream of such a miracle. But it’s much more pleasant to make it yourself, using simple components that are probably found in every home.

Lava Lamp Experience

The basis of the lava lamp will be a small jar or an ordinary glass. In addition, for the experiment you will need vegetable oil, water, salt and a little food coloring.

The jar or other container used as the base of the lamp is filled two-thirds with water and one-third with oil. Since oil is much lighter in weight than water, it will remain on its surface without mixing with it. Then, a little food coloring is added to the jar - this will give the lava lamp color and make the experiment more beautiful and spectacular. And after that, add a teaspoon of salt to the resulting mixture. For what? Salt causes the oil to sink to the bottom in the form of bubbles, and then, dissolving, pushes them up.

The following chemical experiment will help make a school subject like geography exciting and interesting.

Making a volcano with your own hands

After all, studying volcanoes is much more interesting when there is not just a dry book text nearby, but a whole model! Especially if you can easily do it at home with your own hands, using available means at hand: sand, food coloring, soda, vinegar and a bottle are perfect.

To begin with, a bottle is placed on a tray - it will become the basis of the future volcano. Around it you need to mold a small cone of sand, clay or plasticine - this way the mountain will take on a more complete and believable appearance. Now you need to cause a volcanic eruption: pour a little into the bottle warm water, then a little baking soda and food coloring (red or orange color). The finishing touch will be a quarter glass of vinegar. Having reacted with soda, the vinegar will begin to actively push the contents of the bottle out. This explains the interesting effect of the eruption, which can be observed with the child.

A volcano can be made from toothpaste

Can paper burn without being burned?

It turns out yes. And an experiment with fireproof money will easily prove this. For this ten ruble banknote immersed in a 50% alcohol solution (water is mixed with alcohol in a 1 to 1 ratio, a pinch of salt is added to it). After the bill has been thoroughly soaked, excess liquid is removed from it, and the bill itself is set on fire. Once it flares up, it will begin to burn, but will not burn out at all. This experience is quite simple to explain. The temperature at which alcohol burns is not high enough to evaporate the water. Thanks to this, even after the substance burns out completely, the money will remain slightly damp, but absolutely intact.

Experiments with ice are always a success

Young nature lovers can be encouraged to germinate seeds at home without using soil. How it's done?

IN eggshells put a little cotton wool; it is actively moistened with water, and then some seeds (for example, alfalfa) are placed in it. In just a few days you will be able to notice the first shoots. Thus, soil is not always needed for seed germination - only water is enough.

And the next experiment, which is easy to do at home for children, will certainly appeal to girls. After all, who doesn’t like flowers?

A painted flower can be given to your mother

Especially the most unusual ones, bright colors! Thanks to simple experience right in front of the amazed children, simple and familiar flowers can turn into the most unexpected color. Moreover, this is extremely simple to do: just put the cut flower in water with food coloring added to it. Climbing up the stem to the petals, chemical dyes will color them in the colors you want. To better absorb water, it is better to make a cut diagonally - this way it will have the maximum area. In order for the color to appear brighter, it is advisable to use light or white flowers. An even more interesting and fantastic effect will be obtained if, before starting the experiment, the stem is split into several parts and each of them is immersed in its own glass of colored water.

The petals will turn into all colors at once in the most unexpected and bizarre way. That we will undoubtedly make a lasting impression on the child!

Experience "Colored foam"

Everyone knows that under the influence of gravity, water can only flow downwards. But is it possible to make it rise up the napkin? To conduct this experiment, an ordinary glass is filled about a third with water. The napkin is folded several times to form a narrow rectangle. After this, the napkin unfolds again; Having stepped back a little from the bottom edge, you need to draw a line of colored dots on it, enough large diameter. The napkin is immersed in water so that about one and a half centimeters of its colored part is in it. Having come into contact with the napkin, the water will begin to gradually rise upward, coloring it with multi-colored stripes. This unusual effect occurs due to the fact that, having a porous structure, the fibers of the napkin easily allow water to pass upward.

Experiment with water and napkin

To carry out the next experiment you will need a small blotter and cookie cutters different shapes, some gelatin, a transparent bag, a glass and water.

Gelatin water does not mix

Gelatin dissolves in a quarter glass of water; it should swell and increase in volume. Then, the substance is dissolved in a water bath and brought to approximately 50 degrees. the resulting liquid is needed thin layer distribute into a plastic bag. Using gelatin cookie cutters, cut out figures various shapes. After this, you need to lay them on a blotter or napkin, and then breathe on them. Warm breath will cause the gelatin to increase in volume, causing the figures to begin to bend on one side.

Experiments conducted at home with children are very easy to diversify.

Gelatin figures from molds

In winter, you can try to slightly modify the experiment by taking the gelatin figures out onto the balcony or leaving them in freezer. When the gelatin hardens under the influence of cold, patterns of ice crystals will clearly appear on it.

Conclusion

Description of other experiments

Delight and the sea positive emotions– this is what experimentation will bring to curious children, carried out together with adults. And parents will allow themselves to share the joy of their first discoveries with young researchers. After all, no matter how old a person is, the opportunity to return to childhood at least for a short time is truly priceless.

The experiments at home that we will talk about now are very simple, but extremely entertaining. If your child is just getting acquainted with the nature of various phenomena and processes, such experiences will look like real magic for him. But it’s no secret that it is best to present complex information to children in a playful way - this will help reinforce the material and leave vivid memories that will be useful in further education.

Explosion in calm water

Discussing possible experiments at home, first of all we will talk about how to make such a mini-explosion. You will need a large vessel filled with regular tap water(for example, it could be a three-liter bottle). It is advisable for the liquid to settle in a quiet place for 1-3 days. After this, you should carefully, without touching the vessel itself, drop a few drops of ink into the very middle of the water from a height. They will spread beautifully in the water, as if in slow motion.

A balloon that inflates itself

This is another one interesting experience, which can be done at home. You need to pour a teaspoon of ordinary baking soda into the ball itself. Next, you need to take an empty plastic bottle and pour 4 tablespoons of vinegar into it. The ball must be pulled over its neck. As a result, the soda will pour into the vinegar, a reaction will occur with the release of carbon dioxide, and the balloon will inflate.

Volcano

Using the same baking soda and vinegar, you can create a real volcano in your home! You can even use it as a base a plastic cup. Pour 2 tablespoons of soda into the “mouth”, fill it with a quarter glass of heated water and add a little food coloring. dark color. Then all that remains is to add a quarter glass of vinegar and watch the “eruption”.

"Color" magic

At-home experiments you can demonstrate to your child also include unusual changes various substances their colors. A striking example of this is the reaction that occurs when iodine and starch combine. By mixing brown iodine and snow-white starch, you will get a liquid... of a bright blue hue!

Fireworks

What other experiments can you do at home? Chemistry provides a huge field for activity in this regard. For example, you can make bright fireworks right in your room (but preferably in the yard). A little potassium permanganate must be crushed into a fine powder, and then take a similar amount charcoal and grind it too. After thoroughly mixing the coal with manganese, add iron powder. This mixture is poured into a metal cap (an ordinary thimble will do) and kept in the flame of the burner. As soon as the composition heats up, a whole rain of beautiful sparks will begin to scatter around.

Soda rocket

And finally, let’s talk again about chemical experiments at home, which involve the simplest and most accessible reagents - vinegar and sodium bicarbonate. In this case, you will need to take a plastic film cassette, fill it with baking soda, and then quickly pour in 2 teaspoons of vinegar. On next stage you put a lid on a homemade rocket, place it upside down on the ground, stand back and watch it take off.

And learn with them peace and miracles physical phenomena? Then we invite you to our “experimental laboratory”, in which we will tell you how to create simple, but very interesting experiments for children.

Experiments with eggs

Egg with salt

The egg will sink to the bottom if you place it in a glass of plain water, but what happens if you add salt? The result is very interesting and can clearly show interesting facts about density.

You will need:

• Salt
• Tumbler.

Instructions:

1. Fill half the glass with water.

2. Add a lot of salt to the glass (about 6 tablespoons).

3. We interfere.

4. Carefully lower the egg into the water and watch what happens.

Explanation

Salt water has a higher density than regular tap water. It is the salt that brings the egg to the surface. And if you add fresh water to the existing salt water, the egg will gradually sink to the bottom.

Egg in a bottle

Did you know that a boiled whole egg can easily be placed in a bottle?

You will need:

• A bottle with a neck diameter smaller than the diameter of an egg
• Hard boiled egg
• Matches
• Some paper
• Vegetable oil.

Instructions:

1. Lubricate the neck of the bottle with vegetable oil.

2. Now set fire to the paper (you can just use a few matches) and immediately throw it into the bottle.

3. Place an egg on the neck.

When the fire goes out, the egg will be inside the bottle.

Explanation

The fire provokes heating of the air in the bottle, which comes out. After the fire goes out, the air in the bottle will begin to cool and compress. Therefore, a low pressure is created in the bottle, and the external pressure forces the egg into the bottle.

Ball experiment

This experiment shows how rubber and orange peel interact with each other.

You will need:

• Balloon
• Orange.

Instructions:

1. Inflate the balloon.

2. Peel the orange, but do not throw away the orange peel (zest).

3. Squeeze the orange zest over the ball until it pops.

Explanation.

Orange zest contains the substance limonene. It is capable of dissolving rubber, which is what happens to the ball.

Candle experiment

An interesting experiment showing ignition of a candle from a distance.

You will need:

• Regular candle
• Matches or lighter.

Instructions:

1. Light a candle.

2. After a few seconds, put it out.

3. Now bring the burning flame close to the smoke coming from the candle. The candle will start burning again.

Explanation

The smoke rising from an extinguished candle contains paraffin, which quickly ignites. The burning paraffin vapor reaches the wick, and the candle begins to burn again.

Soda with vinegar

A balloon that inflates itself is a very interesting sight.

You will need:

• Bottle
• Glass of vinegar
• 4 teaspoons soda
• Balloon.

Instructions:

1. Pour a glass of vinegar into the bottle.

2. Pour baking soda into the ball.

3. We put the ball on the neck of the bottle.

4. Slowly place the ball vertically while pouring the baking soda into the bottle with vinegar.

5. We watch the balloon inflate.

Explanation

If you add baking soda to vinegar, a process called soda slaking occurs. During this process carbon dioxide is released, which inflates our balloon.

Invisible ink

Play secret agent with your child and create your own invisible ink.

You will need:

• Half a lemon
• Spoon
• A bowl
• Cotton swab
• White paper
• Lamp.

Instructions:

1. Squeeze some lemon juice into a bowl and add the same amount of water.

2. Dip a cotton swab into the mixture and write something on white paper.

3. Wait until the juice dries and becomes completely invisible.

4. When you are ready to read the secret message or show it to someone else, heat the paper by holding it close to a light bulb or fire.

Explanation

Lemon juice is organic matter, which oxidizes and turns brown when heated. Diluted lemon juice in water makes it hard to see on paper, and no one will know there is lemon juice in there until it warms up.

Other substances which work on the same principle:

• Orange juice
• Milk
• Onion juice
• Vinegar
• Wine.

How to make lava

You will need:

• Sunflower oil
• Juice or food coloring
• Transparent vessel (can be a glass)
• Any effervescent tablets.

Instructions:

1. First, pour the juice into a glass so that it fills approximately 70% of the container’s volume.

2. Fill the rest of the glass with sunflower oil.

3. Now wait until the juice separates from the sunflower oil.

4. We throw a tablet into a glass and observe an effect similar to lava. When the tablet dissolves, you can throw another one.

Explanation

Oil separates from water because it has a lower density. Dissolving in the juice, the tablet releases carbon dioxide, which captures parts of the juice and lifts it to the top. The gas leaves the glass completely when it reaches the top, causing the juice particles to fall back down.

The tablet fizzes due to what it contains citric acid and baking soda (sodium bicarbonate). Both of these ingredients react with water to form sodium citrate and carbon dioxide gas.

Ice experiment

At first glance, you might think that the ice cube on top will eventually melt, which should cause the water to spill, but is this really so?

You will need:

• Cup
• Ice cubes.

Instructions:

1. Fill the glass warm water to the very edge.

2. Carefully lower the ice cubes.

3. Watch the water level carefully.

As the ice melts, the water level does not change at all.

Explanation

When water freezes to ice, it expands, increasing its volume (which is why even heating pipes). Water from melted ice takes up less space than the ice itself. Therefore, when the ice cube melts, the water level remains approximately the same.

How to make a parachute

find out about air resistance, making a small parachute.

You will need:

• Plastic bag or other lightweight material
• Scissors
• A small load (possibly some kind of figurine).

Instructions:

1. Cut a large square from a plastic bag.

2. Now we cut the edges so that we get an octagon (eight identical sides).

3. Now we tie 8 pieces of thread to each corner.

4. Don't forget to make a small hole in the middle of the parachute.

5. Tie the other ends of the threads to a small weight.

6. We use a chair or find a high point to launch the parachute and check how it flies. Remember that the parachute should fly as slowly as possible.

Explanation

When the parachute is released, the weight pulls it down, but with the help of the lines, the parachute takes up a large area that resists the air, causing the weight to slowly descend. How larger area surface of the parachute, the more this surface resists falling, and the slower the parachute will descend.

A small hole in the middle of the parachute allows air to flow through it slowly, rather than having the parachute tumble to one side.

How to make a tornado

Find out, how to make a tornado in a bottle with this fun science experiment for kids. The items used in the experiment are easy to find in everyday life. Made home mini tornado much safer than the tornadoes shown on television in the American steppes.