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Scientific discoveries gave humanity a lot original ideas. In rainy weather or when bored, some of them will become in a great way have some fun. We offer you 10 cool experiments. They can be carried out at home even by children, but preferably under adult supervision. These experiments use basic ingredients that are always available in the kitchen. Simple but interesting tricks are based on the principles of chemistry, physics and biology. Well, let's get started!

Learning to separate egg yolk using an empty bottle

What you will need: a raw egg, two bowls (or plates), empty bottle from water.

Progress of the experiment. Squeeze the bottle to release some of the air. Then bring its neck close to the egg on the plate, almost close. Having unclenched plastic container, you will see how the yolk is sucked inside the bottle - together with the air, it rushes to occupy the empty volume.

Why is this happening? After compression, some of the air was “squeezed out,” which means that the pressure outside became greater. Thus, the air literally “pushes” the yolk into the bottle.

Experiment: Create Non-Newtonian Matter

What will you need? Water, cornstarch, deep mixing bowl, food coloring. Put it on old clothes to avoid getting dirty, cover the table with oilcloth.

Progress of the experiment. Pour a glass of water into a deep bowl, then add a glass of cornstarch into the same bowl and mix everything well. You can add food coloring if desired. Now slowly dip your hand into the mixture. As you can see, this is very easy to do. Do the same thing, but with force - as a result, the substance will “repel” your hand.

Why is this happening? Oobleck is a non-Newtonian substance. Sometimes (for example, when it is poured), it appears as a liquid. But! When you put pressure on the mixture, it behaves like solid, and upon impact it can even have a repulsive effect.

Soda and vinegar - instead of a pump!

What we need: regular vinegar, bottles with a narrow neck, balloons, baking soda.

Progress of the experiment. A mini-geyser is made using a similar principle, but we slightly modify the well-known experiment. Pour 50–100 grams of vinegar into bottles. Having made a roll of paper, we put one end of it in balloon ik that needs to be inflated. Inside the other end of a kind of tube we pour 2-3 tablespoons of soda. Now you need to carefully place the balls on the necks of the bottles. Be careful not to let the baking soda spill out of these rubber containers prematurely. The preparations are completed, you can start the fun part. Pour the contents of the balls into the bottle and enjoy watching.

Why is this happening? The molecules of soda and vinegar instantly combine and a powerful reaction occurs. As a result, carbon dioxide (CO 2) is produced, which inflates the balloon so much that it can even explode.

Coloring flowers using the capillary method

What we need: fresh white flowers (daisies and carnations work great, if you don't have flowers, you can even use celery), glass jar, food coloring, scissors. We also advise you to be patient, since you will see the full result of the experiment only after 24 hours. But after some time you can watch how an amazing transformation takes place.

Progress of the experiment. Pour water inside the jar and add dye of any color there. We dip flowers into this liquid and watch how the delicate white petals gradually turn a different color.

Why is this happening? Water evaporates from the flower's petals, so the stem absorbs the colored liquid from the jar. Gradually the colored liquid reaches its petals.

Determining the amount of sugar in soda

What will you need? Unopened cans of diet and sugary drinks, a large container of water (a bath will also work for this experiment).

Progress of the experiment. Immerse soda cans in water. Not all of them will sink to the bottom. Those that remain floating below the surface contain a lot of sugar. Fans of diets can safely drink “heavy” drinks.

What is the reason for this discrepancy? The density of regular and diet carbonated drinks is different, and its value is affected by the sugar content. As a result, some cans flounder in the water, while diet drinks safely go to the bottom.

Magic bag

What you will need: A bag with a special plastic zipper, a couple of sharpened pencils, a mug of water. We recommend doing the experiment over a sink or bathtub, as the temptation to pull out the pencils after the experiment will be great!

Progress of the experiment. Fill the bag with water and zip it up. Then we quickly pierce it through with several pencils, one at a time. As you can see, the holes did not even create a gap - the bag remained completely sealed.

Why is this happening? The tightly sealed bag is made from flexible polymers. When punctured, the plastic surface seals tightly around the pencil, so it does not leak.

Cleaning copper coins at home

What do we need? Tarnished coins, 1/4 cup white vinegar, one teaspoon salt, cup water, two bowls (non-metal), paper towels. We recommend wearing glasses to protect your eyes.

Progress of the experiment. Pour water, vinegar into a bowl and add salt. Place coins in the prepared solution. After some time, we evaluate the degree of their purification.

How it works? The acetic acid reacts with the salt to help clear the copper oxide from the copper pennies. Rinse the coins with water after the experiment, otherwise they will turn greenish. After clearing a dozen copper coins, make another one interesting experience. Put in old mortar metal coin. You will see the steel color change to yellowish. This happened because the metal attracted copper oxide molecules.

Flying ghosts

What do we need? An inflated balloon, ghosts cut out of tissue paper, and something to generate static electricity (your clothes or hair will work for this purpose!).

Progress of the experiment. We glue the paper figures at one end to the table using tape. Then we rub the balloon hard on clothes or hair, and bring it closer to the lying silhouettes. Oh no! The ghosts have woken up and are trying to take off!

How it works? Rubbing a rubber ball against fabric or hair creates a negative charge on the surface, which attracts paper ghosts to itself.

Dancing Raisin Experience

What we need: raisins, a bottle of mineral water, a transparent drinking glass

Progress of the experiment. This experience is extremely simple. Pour mineral water into a glass. Add a handful of raisins there and watch them “dance” in the glass container.

Why is this happening? Tiny bubbles carbon dioxide(CO 2) cling to the uneven surface of the raisins. As a result, they become lighter and rise to the surface, where the bubbles burst. Then the raisins become heavy and fall back down, where they are again overtaken by CO 2 bubbles.

Colored milk painting

What do we need? Two plastic dishes, milk, food coloring, cotton swabs, liquid soap. Since we will be dealing with dyes, it is advisable to cover your clothes with an apron.

Progress of the experiment. Pour a little milk into the bowl - just enough to cover the bottom. Then we drop colored dye onto its surface. Having dipped a cotton swab in liquid soap, we touch the epicenter of the color inclusions on the milky surface. Now we begin to draw surreal stains.

Why is this happening? Food coloring is not as dense as milk, so the drops will stick to the surface at first. But adding soap to the tip of a cotton swab breaks the surface tension of the milk by dissolving the fat molecules. The paint molecules move smoothly along the milky surface, pushing off the soap layer.

Try these interesting experiments at home, with your children or in a friendly company. You won’t even notice how quickly time flies by. useful entertainment, and the inquisitive minds of young know-it-alls will board ever new scientific peaks.

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There are very simple experiments that children remember for the rest of their lives. The guys may not fully understand why this is all happening, but when time will pass and they find themselves in a physics or chemistry lesson, a very clear example will certainly emerge in their memory.

website I collected 7 interesting experiments that children will remember. Everything you need for these experiments is at your fingertips.

Fireproof ball

Will need: 2 balls, candle, matches, water.

Experience: Inflate a balloon and hold it over a lit candle to demonstrate to children that the fire will make the balloon burst. Then pour plain tap water into the second ball, tie it and bring it to the candle again. It turns out that with water the ball can easily withstand the flame of a candle.

Explanation: The water in the ball absorbs the heat generated by the candle. Therefore, the ball itself will not burn and, therefore, will not burst.

Pencils

You will need: plastic bag, simple pencils, water.

Experience: Fill the plastic bag halfway with water. Use a pencil to pierce the bag right through where it is filled with water.

Explanation: If you pierce a plastic bag and then pour water into it, it will pour out through the holes. But if you first fill the bag halfway with water and then pierce it with a sharp object so that the object remains stuck into the bag, then almost no water will flow out through these holes. This is due to the fact that when polyethylene breaks, its molecules are attracted closer to each other. In our case, the polyethylene is tightened around the pencils.

Unbreakable balloon

You will need: a balloon, a wooden skewer and some dishwashing liquid.

Experience: Coat the top and bottom with the product and pierce the ball, starting from the bottom.

Explanation: The secret of this trick is simple. In order to preserve the ball, you need to pierce it at the points of least tension, and they are located at the bottom and at the top of the ball.

Cauliflower

Will need: 4 cups of water, food coloring, cabbage leaves or white flowers.

Experience: Add any color of food coloring to each glass and place one leaf or flower in the water. Leave them overnight. In the morning you will see that they have turned different colors.

Explanation: Plants absorb water and thereby nourish their flowers and leaves. This happens due to the capillary effect, in which water itself tends to fill the thin tubes inside the plants. This is how flowers, grass, and big trees. By sucking in tinted water, they change color.

floating egg

Will need: 2 eggs, 2 glasses of water, salt.

Experience: Carefully place the egg in a glass with a simple clean water. As expected, it will sink to the bottom (if not, the egg may be rotten and should not be returned to the refrigerator). Pour warm water into the second glass and stir 4-5 tablespoons of salt in it. For the purity of the experiment, you can wait until the water cools down. Then place the second egg in the water. It will float near the surface.

Explanation: It's all about density. The average density of an egg is much greater than that of plain water, so the egg sinks down. A density saline solution higher, and therefore the egg rises upward.

Crystal lollipops

Will need: 2 cups of water, 5 cups of sugar, wooden sticks for mini kebabs, thick paper, transparent glasses, saucepan, food coloring.

Experience: In a quarter glass of water, boil sugar syrup with a couple of tablespoons of sugar. Sprinkle some sugar onto the paper. Then you need to dip the stick in the syrup and collect the sugar with it. Next, distribute them evenly on the stick.

Leave the sticks to dry overnight. In the morning, dissolve 5 cups of sugar in 2 glasses of water over a fire. You can leave the syrup to cool for 15 minutes, but it should not cool too much, otherwise the crystals will not grow. Then pour it into jars and add different food colorings. Place the prepared sticks in a jar of syrup so that they do not touch the walls and bottom of the jar; a clothespin will help with this.

Explanation: As the water cools, the solubility of sugar decreases, and it begins to precipitate and settle on the walls of the vessel and on your stick seeded with sugar grains.

Lighted match

Will be needed: Matches, flashlight.

Experience: Light a match and hold it at a distance of 10-15 centimeters from the wall. Shine a flashlight on the match and you will see that only your hand and the match itself are reflected on the wall. It would seem obvious, but I never thought about it.

Explanation: Fire does not cast shadows because it does not prevent light from passing through it.

If you want to awaken an interest in science in your children, but the teacher at school cannot cope with this (and in reality he simply does not care), then you do not have to hit your child over the head with a book or hire tutors. You, as a responsible parent, can conduct interesting and colorful scientific experiments right at home using available materials.

A little imagination, and entertainment for the children who came to your child’s birthday party is ready.

1. Walking on chicken eggs

Even though the eggs look very fragile, their shells are stronger than they look. If the pressure on the shell is distributed evenly, it can withstand very heavy loads. This can be used to show children a fun trick involving walking on eggs, and also explain to them how it works.

Although we assume that the experiment will be successful, it doesn’t hurt to be on the safe side, so it’s better to cover the floor with oilcloth or lay out garbage bags. Place a couple of trays of eggs on top, making sure that there are no defective or cracked ones. Also make sure that the eggs are positioned equally, otherwise the load will not be distributed evenly.

Now you can carefully stand on the eggs barefoot, trying to distribute your weight evenly. The same principle is used in walking on nails or glass, but this should not be repeated with children. Don't repeat it at all.

2. Non-Newtonian fluid

Most liquids on the planet practically do not change their viscosity when the force that is applied to them changes. However, there are liquids that become almost solid when the force increases, and they are called non-Newtonian. You can make them right at home from available materials. Show this experience to your child and he will be happy.

To make a non-Newtonian liquid, pour a glass of starch into a deep bowl and fill it with water in a 1:1 ratio. You can add food coloring for beauty. Start stirring it all slowly until the mixture turns into a homogeneous mass.

If you slowly scoop up such liquid with your hand, it will simply flow through your fingers. But as soon as you apply force to it at speed or hit it sharply, it immediately becomes hard. This will be a great toy for your child to use for the next few hours.

3. Bouncing coin

A very interesting experience, as well as a trick if you want to convince others of your paranormal abilities. For this experiment at home, we will need a regular bottle, as well as a coin that is slightly larger in diameter than the neck.

Chill the bottle in the refrigerator, or better yet, in the freezer. After this, moisten its neck with water and place a coin on top. You can put your hands on the bottle for effect, warming it. The air inside the bottle will begin to expand and escape through the neck, throwing the coin into the air.

4. Vulcan at home

The combination of baking soda and vinegar is a win-win if you're trying to impress kids. Just make a small volcano out of plasticine or clay on a plate, and pour a few teaspoons of soda into its hole, pour in some warm water and add red food coloring for decoration. After this, pour a small amount of vinegar into the mouth and observe the reaction.

5. Lava Falls

A very effective and simple scientific experiment that allows you to demonstrate to children the principle of interaction of liquids with different masses and densities.
Take a tall, narrow container (a flower vase or just a plastic bottle will do). Pour several glasses of water and a glass of vegetable oil into the vessel. Add bright food coloring to make the experiment more visual and prepare a tablespoon of salt.

At first, the oil will float on the surface of the vessel because it has a lower density. Begin to slowly pour the salt into the vessel. The oil will begin to sink to the bottom, but when it reaches it, the salt will be freed from the viscous liquid, and the oil particles will begin to rise to the top again, like grains of hot lava.

6. Money doesn't burn

This experience is suitable for wealthy people who have nothing left to burn but money. A great trick to surprise children and adults. Of course, there is a risk of failing the performance, so please respect the time limits.

Take any banknote (depending on your capabilities) and soak it in a salted solution of alcohol and water in a 1:1 ratio. Make sure that the bill is completely saturated, after which you can remove it from the liquid. Secure the bill in some holder and set it on fire.

Alcohol boils at a fairly low temperature and begins to evaporate much faster than water. Therefore, all the fuel will evaporate before the bill itself catches fire.

7. Experiment with colored milk

For this fun experiment we will need full fat milk, some food coloring different colors And detergent.

Pour milk into a plate and add a few drops of coloring to different places containers. Take a drop of detergent on your fingertip or soak a cotton swab and touch the surface of the milk directly in the center of the plate. Watch how the dyes begin to mix effectively.

As you might have guessed, detergent and grease don't mix, and when you touch the surface, a reaction begins that causes the molecules to move.

The ability to see miracles in everyday objects distinguishes a genius from other people. Creativity is formed in early childhood when the baby inquisitively studies the world. Scientific experiments, including experiments with water, - easy way interest the child natural sciences and a great family activity.

From this article you will learn

Why water is good for home experiments

Water is the ideal substance to get acquainted with physical properties items. The advantages of the substance we are familiar with are:

• accessibility and low cost;
• the ability to exist in three states: solid, vapor and liquid;
• the ability to easily dissolve various substances;
• the transparency of the water ensures the clarity of the experience: the baby will be able to explain the result of the study himself;
• safety and non-toxicity of substances necessary for experiments: the child can touch with his hands everything that interests him;
• no need additional tools and equipment, special skills and knowledge;
• You can conduct research both at home and in kindergarten.

The complexity of the experiments depends on the age of the child and the level of his knowledge. It is better to start experiments with water for children with simple manipulations; in older children preschool educational institution group or at home.

Experiments for kids (4-6 years old)

All little children enjoy the process of pouring and mixing liquids. different color. The first lessons can be devoted to getting to know the organoleptic properties of the substance: taste, smell, color.

In children preparatory group You might ask what the differences are mineral water and sea. In kindergarten, the results of research do not need to be proven and what is happening can be explained in accessible words.

Transparency experience

You will need two transparent glasses: one with water, the other with an opaque liquid, such as tomato juice, milk, cocktail tubes or spoons. Place objects in each container and ask the kids, in which of the cups is the straw visible and in which is not? Why? Which substance is transparent and which is impenetrable?

Drowning - not drowning

You need to prepare two glasses of water, salt and a raw fresh egg. Add salt to one of the glasses at the rate of two tablespoons per glass. If you put an egg in a clean liquid, it will sink to the bottom, and if you put it in a salty liquid, it will appear on the surface of the water. The child will develop a concept of the density of matter. If you take a large container and gradually add fresh water to salt water, the egg will gradually sink.

Freezing

On initial stage It will be enough to pour water into the mold with the child and put it in the freezer. You can watch together the process of melting an ice cube, and speed up the process by touching it with your fingers.

Then complicate the experiment: put a thick thread on an ice cube and sprinkle the surface with salt. After a few moments, everything will grab together and the cube can be lifted up by the thread.

A breathtaking sight is represented by melting colored ice cubes placed in a transparent container with vegetable oil(you can take a child's). Droplets of water sinking to the bottom form a bizarre pattern that is constantly changing.

Steam is also water

For the experiment, you need to boil water. Notice to the children how steam rises above the surface. Hold a mirror or glass saucer over a container of hot liquid, such as a thermos. Show how droplets flow from it. Make a conclusion: if you heat water, it will turn into steam; when cooled, it will turn into a liquid state again.

"CONSPIRACY"

It's not an experience, but rather a focus. Before starting the experiment, ask the kids if water in a closed container can change color under a magic spell. In front of the children, say a spell, shake the jar, and the colorless liquid will become colored.

The secret is that water-soluble paint, watercolor or gouache is applied to the lid of the container in advance. When shaken, the water washes away the paint layer and changes color. The main thing is not to turn inner part covers to the spectators.

Broken pencil

The simplest experiment demonstrating the refraction of an image in a liquid is placing a tube or pencil in a transparent glass filled with water. The part of the product immersed in liquid will appear deformed, causing the pencil to appear broken.

The optical properties of water can also be checked in this way: take two eggs of the same size and immerse one of them in water. One will appear larger than the other.

Expansion on freezing

Take plastic cocktail straws, cover one end with plasticine, fill with water to the brim and seal. Place the straw in the freezer. After a while, notice to the baby that the liquid, freezing, expanded and displaced the plasticine plugs. Explain that water can rupture a container if exposed to low temperatures.

Dry cloth

Place a dry paper napkin at the bottom of an empty glass. Turn it over and lower it vertically into a bowl of water with the edges down to the bottom. Prevent liquid from getting inside by holding the glass with force. Also remove the glass from the water in a vertical direction.

If everything is done correctly, the paper in the glass will not get wet; air pressure will prevent this. Tell the children the story of a diving bell that can be used to lower people to the bottom of a body of water.

Submarine

Place a tube in a glass filled with water and bend it in the lower third. We immerse the glass completely upside down in a container of water so that part of the straw is on the surface. We blow into it, the air instantly fills the glass, it jumps out of the water and turns over.

You can tell the children that fish use this technique: to sink to the bottom, they compress the air bubble with their muscles, and some of the air comes out of it. To rise to the surface, they pump up air and float up.

Bucket rotation

To carry out this experiment, it is advisable to call your dad for help. The procedure is as follows: take a strong bucket with a strong handle and fill it halfway with water. A more spacious place is chosen; it is advisable to conduct the experiment in nature. You need to take the bucket by the handle and quickly rotate it so that the water does not spill. When the experiment is over, you can watch the splashes spilling out of the bucket.

If your child is old enough, explain that liquid is held in place by centrifugal force. You can experience its effect on attractions whose operating principle is based on circular motion.

Vanishing coin

To demonstrate this experiment, fill a quart jar with water and close the lid. Take out a coin and give it to the baby so that he can see that it is an ordinary one. Have your child place it on the table and you place the jar on top. Ask your child if he sees the money. Remove the container and the coin will be visible again.

floating paper clip

Before starting the experiment, ask your child if they drown in water metal objects. If he finds it difficult to answer, throw a paper clip vertically into the water. She will sink to the bottom. Tell your child that you know a magic spell to keep the paperclip from sinking. Using a flat hook bent from a second specimen, slowly and carefully place a horizontal paperclip on the surface of the water.

To prevent the product from completely sinking to the bottom, first rub it with a candle. The trick can be carried out thanks to a property of water called surface tension.

Anti-spill glass

For another experiment based on the properties of surface tension of water, you will need:

• transparent smooth glass glass;
• a handful of small metal objects: nuts, washers, coins;
• oil, mineral or vegetable;
• chilled water.

Before conducting the experiment, you need to grease the edges of a clean, dry glass with oil. Fill it with water and lower the metal objects one at a time. The surface of the water will no longer be flat and will begin to rise above the edges of the glass. At some point, the film on the surface will burst and the liquid will spill. Oil in this experiment is needed to reduce the connection between water and the surface of the glass.

Flowers on the water

Required materials and tools:

• paper of different densities and colors, cardboard;
• scissors;
• glue;
• wide container with water: basin, deep tray, dish.

The preparatory stage is making flowers. Cut the paper into squares with a side of 15 centimeters. Fold each one in half and then double again. Randomly cut out the petals. Bend them in half so that the petals form a bud. Dip each flower into the prepared water.

Gradually the flowers will begin to open. The speed of unraveling will depend on the density of the paper. The petals straighten due to swelling of the fibers of the material.

Treasure Hunt

Collect small toys, coins, beads and freeze them in one or more pieces of ice. The essence of the game is that as it thaws, objects will appear on the surface. To speed up the process, you can use kitchen utensils And various instruments: forks, tweezers, knife with a safe blade. If several children are playing, you can arrange a competition.

Everything is absorbed

The experience introduces the child to the ability of objects to absorb liquids. To do this, take a sponge and a plate of water. Dip the sponge into the plate and watch with your child as the water rises and the sponge becomes wet. Experiment with different items, some have the ability to absorb liquids, and some do not.

Ice cubes

Children love to freeze water. Experiment with them with shapes and colors: kids will make sure that the liquid follows the shape of the container in which it is placed. Freeze the colored water into cubes, first insert toothpicks or straws into each.

From the freezer you will get a lot of colorful boats. Put on paper sails and lower the boats into the water. The ice will begin to melt, forming bizarre colored stains: this is the diffusion of liquid.

Experiments with water of different temperatures

Process stages and conditions:

1. Prepare four identical glass glasses, watercolor paints or food coloring.
2. Pour into two glasses cold water, at two - warm.
3. Color warm water black and cold water yellow.
4. Place a glass with cold water into a plate, cover the container with warm black liquid with a plastic card, turn it over and place it so that the glasses are located symmetrically.
5. Carefully remove the card, being careful not to dislodge the glasses.
6. Cold and warm water will not mix due to the properties of physics.

Repeat the experiment, but this time place a glass of hot water down.

Conduct all experiments in kindergarten in game form.

Experiments for schoolchildren

Water tricks for schoolchildren should be explained already in primary class introducing the protozoa scientific concepts, then the young magician will easily master both physics and chemistry in grades 8–11.

Color layers

Take plastic bottle, fill a third of it with vegetable oil, a third with water, and leave another third empty. Pour food coloring into the bottle and seal it with a lid. A child can see that oil is lighter than air, and water is heavier.

The oil will remain unchanged, but the water will be colored. If you shake the bottle, the layers will shift, but after a few moments everything will be as it was. When placing the container in the freezer, the layer of oil will sink to the bottom and the water will freeze on top.

Non-spill sieve

Everyone knows that you cannot hold water in a sieve. Show your child a trick: grease a sieve with oil and shake. Carefully pour some water along the inside edge of the sieve. Water will not flow out, since it will be retained by the oil film. But if you run your finger along the bottom, it will collapse and the liquid will flow out.

Experiment with glycerin

The experiment can be carried out on the eve of the New Year. Take a jar with a screw top, a small plastic toy, glitter, glue and glycerin. Glue the toy, Christmas tree, snowman to inside covers.

Pour water into a jar, add glitter and glycerin. Close the lid tightly with the figurine inside and turn the container over. Thanks to glycerin, the sparkles will swirl beautifully around the figure if you regularly turn the structure over. The jar can be given as a gift.

Making a cloud

It's more of an environmental experiment. If your child asks you what clouds are made of, do this experiment with water. Pour into a 3 liter jar hot water, approximately 2.5 centimeters. Place pieces of ice on a saucer or baking sheet and place on the jar so that the neck is completely closed.

Soon a cloud of fog (steam) forms inside the container. You can draw your preschooler's attention to condensation and explain why it is raining.

Tornado

Often both children and adults are interested in how such a thing is formed. atmospheric phenomenon like a tornado. Together with your children, you can answer this question by arranging the following experiment with water, which consists of the following steps:

1. Prepare two 2-liter plastic bottles, tape, metal washer diameter 2.5.
2. Fill one of the bottles with water and place a washer on the neck.
3. Turn the second bottle over, place it on top of the first and rewind tightly top part Tape both bottles with tape to prevent water from spilling out.
4. Turn the structure over so that the water bottle is on top.
5. Create a hurricane: start rotating the device in a spiral. The flowing stream will turn into a mini-tornado.
6. Observe the process happening in the bottles.

A tornado can also be created in a bank. To do this, fill it with water, not reaching the edges by 4-5 centimeters, add dishwashing detergent. Close the lid tightly and shake the jar.

Rainbow

You can explain the origin of the rainbow to your child as follows. In a sunny room, place a wide container of water and place a sheet of white paper next to it. Place a mirror in the container, catch a ray of sunlight with it, and direct it towards the sheet so that a spectrum appears. You can use a flashlight.

Lord of matches

Pour water into a plate and let it float on the surface of the match. Dip a piece of sugar or soap into the water: in the first case, the matches will gather around the piece, in the second, they will float away from it. This happens because sugar increases the surface tension of water, while soap decreases it.

Water flows up

Place white flowers in a container of water colored with food coloring, preferably carnations or pale green plants such as celery. After some time, the flowers will change color. You can do it simpler: use white paper napkins, not flowers, in the experiment with water.

An interesting effect can be achieved if one edge of the towel is placed in water. a certain color, and the other - in another, contrasting shade.

Water from thin air

A fascinating home experiment clearly demonstrates how the condensation process occurs. To do this, take glass jar, fill it with ice cubes, add a spoonful of salt, shake several times and close the lid. In about 10 minutes outer surface droplets of water will appear in the jars.

For clarity, wrap it in a paper towel and make sure there is enough water. Tell your child where in nature you can see the process of water condensation: for example, on cold stones under the sun.

Paper cover

If you turn a glass of water over, it will spill out. Can a sheet of paper hold water? To answer the question, cut out a flat lid from thick paper that is 2-3 centimeters larger than the diameter of the edges of the glass.

Fill the glass about halfway with water, place a piece of paper on top and carefully turn it over. Due to air pressure, the liquid must remain in the container.

Thanks to this joke, a student can earn popularity among his classmates.

Soap Volcano

You will need: detergent, soda, vinegar, cardboard for the “volcano”, iodine. Pour water, vinegar, dish soap and a few drops of iodine or other dye into a glass. Make a cone out of dark cardboard and wrap the container with the ingredients so that the edges touch. Pour baking soda into a glass and the volcano will begin to erupt.

Spark plug pump

This fun water trick demonstrates the power of gravity. Take a small candle, place it on a saucer and light it. Pour some colored water into a saucer. Cover the candle with a glass, the liquid will gradually be drawn into it. The explanation lies in the change in pressure inside the container.

Growing Crystals

The result of this experience will be obtaining beautiful crystals on the surface of the wire. To grow them you need a strong salt solution. You can determine whether the solution is sufficiently saturated by adding a new portion of salt. If it no longer dissolves, the solution is ready. How cleaner water, all the better.

To clear the solution of debris, pour it into another container. Dip a wire with a loop at the end into the solution and place everything in a warm place. To obtain patterned crafts, twist the wire as required. After a few days, the wire becomes covered with salt “snow”.

Dancing coin

Needed Glass bottle, coin and water. Place the empty bottle without the cap in the freezer for 10 minutes. Place a coin soaked in water on the neck of the bottle. In less than a minute cold air when heated, it will expand and begin to displace the coin, causing it to bounce on the surface.

Magic ball

Tools and materials: vinegar, baking soda, lemon, glass, balloon, bottle, electrical tape and funnel.

Process progress:

• Pour water into a bottle, add a teaspoon of soda.
• Mix three tablespoons of vinegar and lemon juice.
• Quickly pour the mixture into the water bottle through the funnel and place the ball on the neck of the bottle containing the water and soda mixture. The reaction will occur instantly: the composition will begin to “boil” and the balloon will inflate as air is displaced.

To ensure that air from the bottle gets only into the ball, wrap the neck with electrical tape.

Balls in a frying pan

If you pour a little water onto a hot surface, it will disappear (evaporate). When you add another portion, balls resembling mercury form in the pan.

Burning liquid

Cover the working surface of the sparklers with tape, leaving the tips, set them on fire and place them in a transparent vessel with water. The sticks will not go out, thanks to their chemical composition in water, their fire burns even brighter, creating the effect of a flaming liquid.

Water management

The intensity of sound is another means of changing the direction of fluid flow. The result can be observed using a powerful speaker. Under the influence of music or other sound effects, water takes on a bizarre, fantastic shape, forming foam and mini-fountains.

Rainbow water

The cognitive experiment is based on changes in the density of water. For the process, take four small glasses of water, dyes, a syringe and granulated sugar.

Add dye to the first glass and leave for a while. In the remaining mixture, dissolve 1, 2 and 3 teaspoons of sugar and dyes of different colors in succession. Unsweetened liquid is poured into a transparent glass with a syringe. Then, using a syringe, water is carefully released to the bottom, to which 0.5 teaspoon of sugar is added.

Third and fourth steps: a solution with an average and maximum concentration is released in the same way: closer to the bottom. If everything is done correctly, the glass will contain water with multi-colored layers.

colorful lamp

The cool experience delights not only children 5-6 years old, but also primary schoolchildren and teenagers. Equal parts of water and sunflower oil are poured into a glass or plastic bottle and dye is added. The process is started by dropping an effervescent aspirin tablet into water. The effect will be enhanced if this experiment is carried out in dark room, providing illumination using a flashlight.

Ice Formation

For the trick you will need a 0.5 liter plastic bottle filled with distilled water without gas, and freezer. Place the container in the freezer, after 2 hours, take it out and sharply hit it on a hard surface.

The water will begin to turn into ice before your eyes. The experiment is explained by the composition of distilled water: it lacks centers responsible for crystallization. After impact, bubbles appear in the liquid and the freezing process begins.

This is not all the manipulations carried out with water. Substances such as starch, clay, and shampoo change its properties beyond recognition. Children aged 6-7 years can easily do almost all experiments themselves in the kitchen or experiment under the supervision of their parents by watching a video tutorial or explanatory pictures.

More cool experiences shown in this video.

If necessary, the small chemist should be offered advice or assistance. It’s even better to do all the research together: even adults will discover many amazing properties of water.

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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 interesting experiment that can be done at home. In the ball itself you need to pour a teaspoon of ordinary baking soda. 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 and fill it baking soda, and then quickly pour in 2 teaspoons of vinegar. The next step is to put a lid on your homemade rocket, place it upside down on the ground, stand back and watch it take off.