Cool experiments in chemistry. Chemical experiments for children at home

All children, without exception, love mysterious, mysterious and unusual phenomena. Most children really like to conduct interesting experiments, some of which do not seek help from parents or other adults.

Experiments that can be done with children

Not all experiences are suitable for children. Some of them can pose a danger to the life and health of babies, especially preschool children. Nevertheless, under the control and supervision of parents or other adults, a child can conduct any entertaining experiment - the main thing is to carefully monitor compliance with the necessary safety requirements.

All scientific experiments are extremely useful for children. They allow young inventors to visually get acquainted with the properties of various substances and objects, chemical compounds and much more, understand the causes of certain phenomena and gain valuable practical experience that can be applied in later life. In addition, some of these experiments can be shown as tricks, thanks to which the child will be able to gain authority among his friends and buddies.

Water experiments for children

All people in everyday life very often use water and do not think at all that it has truly magical and amazing properties. Meanwhile, with this liquid you can spend incredibly with children. For example, boys and girls at home can do the following experiments:

Experiments with fire for children

You should be especially careful with fire, but it is with it that you can put incredibly interesting experiments for children. Try one of the following experiments with your offspring:

Salt experiments for children

Entertaining experiments for children can also be carried out with bulk substances, for example, with salt. Children will definitely enjoy such experiments as:

Experiments with soda for children

No less spectacular experiments for children can be carried out with baking soda, for example, "Volcano". Place a small plastic bottle on the table and mold a clay or sand volcano around it. Pour 2 tablespoons of baking soda into a container, add approximately 50-70 ml of warm water, a few drops of red food coloring, and at the very end - a quarter cup of vinegar. A real volcanic eruption will happen before your eyes, and the child will be delighted.

Other experiments for children with baking soda can be built on the property of this substance to crystallize. To obtain crystals, You can use the same method as in the case of salt. To do this, it is necessary to prepare a dense soda solution in which the bulk substance no longer dissolves, and then place a metal wire or other object there and leave it for several days in a warm place. The result will not be long in coming.

Balloon experiments for kids

Often experiments and experiments for children are associated with various properties of balloons, such as:

Experiments with eggs for children

Some interesting experiments with children can be done using chicken eggs, for example:

Experiments with lemon for children

Anything can be used to conduct experiments. Interesting experiments with lemon deserve special attention, for example:

Experiments with paints for children

All kids love to draw, but it will be even more interesting for them to conduct entertaining experiments with paints. Try one of the following experiments:

Helpful Hints

Children are always trying to find out something new every day and they always have a lot of questions.

They can explain some phenomena, or you can show how this or that thing, this or that phenomenon works.

In these experiments, children not only learn something new, but also learn create differentcrafts with which they can play further.

1. Experiments for children: lemon volcano

You will need:

2 lemons (for 1 volcano)

Baking soda

Food coloring or watercolors

Dishwashing liquid

Wooden stick or spoon (optional)

1. Cut off the bottom of the lemon so it can be placed on a flat surface.

2. On the reverse side, cut a piece of lemon as shown in the image.

* You can cut half a lemon and make an open volcano.

3. Take the second lemon, cut it in half and squeeze the juice out of it into a cup. This will be the backup lemon juice.

4. Place the first lemon (with the part cut out) on the tray and spoon "remember" the lemon inside to squeeze out some of the juice. It is important that the juice is inside the lemon.

5. Add food coloring or watercolor to the inside of the lemon, but do not stir.

6. Pour dishwashing liquid inside the lemon.

7. Add a full tablespoon of baking soda to the lemon. The reaction will start. With a stick or spoon, you can stir everything inside the lemon - the volcano will begin to foam.

8. To make the reaction last longer, you can gradually add more soda, dyes, soap and reserve lemon juice.

2. Home experiments for children: electric eels from chewing worms

You will need:

2 glasses

small capacity

4-6 chewable worms

3 tablespoons of baking soda

1/2 spoon of vinegar

1 cup water

Scissors, kitchen or clerical knife.

1. With scissors or a knife, cut lengthwise (just lengthwise - this will not be easy, but be patient) of each worm into 4 (or more) parts.

* The smaller the piece, the better.

* If scissors don't want to cut properly, try washing them with soap and water.

2. Mix water and baking soda in a glass.

3. Add pieces of worms to the solution of water and soda and stir.

4. Leave the worms in the solution for 10-15 minutes.

5. Using a fork, transfer the worm pieces to a small plate.

6. Pour half a spoon of vinegar into an empty glass and start putting worms in it one by one.

* The experiment can be repeated if the worms are washed with plain water. After a few attempts, your worms will begin to dissolve, and then you will have to cut a new batch.

3. Experiments and experiments: a rainbow on paper or how light is reflected on a flat surface

You will need:

bowl of water

Clear nail polish

Small pieces of black paper.

1. Add 1-2 drops of clear nail polish to a bowl of water. See how the varnish disperses through the water.

2. Quickly (after 10 seconds) dip a piece of black paper into the bowl. Take it out and let it dry on a paper towel.

3. After the paper has dried (it happens quickly) start turning the paper and look at the rainbow that is displayed on it.

* To better see the rainbow on paper, look at it under the sun's rays.

4. Experiments at home: a rain cloud in a jar

When small drops of water accumulate in a cloud, they become heavier and heavier. As a result, they will reach such a weight that they can no longer remain in the air and will begin to fall to the ground - this is how rain appears.

This phenomenon can be shown to children with simple materials.

You will need:

Shaving foam

Food coloring.

1. Fill the jar with water.

2. Apply shaving foam on top - it will be a cloud.

3. Let the child begin to drip food coloring onto the "cloud" until it starts to "rain" - drops of food coloring begin to fall to the bottom of the jar.

During the experiment, explain this phenomenon to the child.

You will need:

warm water

Sunflower oil

4 food coloring

1. Fill the jar 3/4 full with warm water.

2. Take a bowl and mix 3-4 tablespoons of oil and a few drops of food coloring in it. In this example, 1 drop of each of 4 dyes was used - red, yellow, blue and green.

3. Stir the dyes and oil with a fork.

4. Carefully pour the mixture into a jar of warm water.

5. Watch what happens - the food coloring will begin to slowly sink through the oil into the water, after which each drop will begin to disperse and mix with other drops.

* Food coloring dissolves in water, but not in oil, because. The density of oil is less than water (which is why it "floats" on water). A drop of dye is heavier than oil, so it will begin to sink until it reaches the water, where it begins to disperse and look like a small firework.

6. Interesting experiences: ina bowl in which colors merge

You will need:

- a printout of the wheel (or you can cut out your own wheel and draw all the colors of the rainbow on it)

Elastic band or thick thread

Glue stick

Scissors

A skewer or screwdriver (to make holes in the paper wheel).

1. Choose and print the two templates you want to use.

2. Take a piece of cardboard and use a glue stick to glue one template to the cardboard.

3. Cut out the glued circle from the cardboard.

4. Glue the second template to the back of the cardboard circle.

5. Use a skewer or screwdriver to make two holes in the circle.

6. Pass the thread through the holes and tie the ends into a knot.

Now you can spin your spinning top and watch how the colors merge on the circles.

7. Experiments for children at home: jellyfish in a jar

You will need:

Small transparent plastic bag

Transparent plastic bottle

Food coloring

Scissors.

1. Lay the plastic bag on a flat surface and smooth it out.

2. Cut off the bottom and handles of the bag.

3. Cut the bag lengthwise on the right and left so that you have two sheets of polyethylene. You will need one sheet.

4. Find the center of the plastic sheet and fold it like a ball to make a jellyfish head. Tie the thread around the "neck" of the jellyfish, but not too tight - you need to leave a small hole through which to pour water into the head of the jellyfish.

5. There is a head, now let's move on to the tentacles. Make cuts in the sheet - from the bottom to the head. You need about 8-10 tentacles.

6. Cut each tentacle into 3-4 smaller pieces.

7. Pour some water into the jellyfish's head, leaving room for air so the jellyfish can "float" in the bottle.

8. Fill the bottle with water and put your jellyfish in it.

9. Drop a couple of drops of blue or green food coloring.

* Close the lid tightly so that water does not spill out.

* Have the children turn the bottle over and watch the jellyfish swim in it.

8. Chemical experiments: magic crystals in a glass

You will need:

Glass cup or bowl

plastic bowl

1 cup Epsom salt (magnesium sulfate) - used in bath salts

1 cup hot water

Food coloring.

1. Pour Epsom salt into a bowl and add hot water. You can add a couple of drops of food coloring to the bowl.

2. Stir the contents of the bowl for 1-2 minutes. Most of the salt granules should dissolve.

3. Pour the solution into a glass or glass and place it in the freezer for 10-15 minutes. Don't worry, the solution isn't hot enough to crack the glass.

4. After freezing, move the solution to the main compartment of the refrigerator, preferably on the top shelf and leave overnight.

The growth of crystals will be noticeable only after a few hours, but it is better to wait out the night.

This is what the crystals look like the next day. Remember that crystals are very fragile. If you touch them, they are most likely to break or crumble immediately.

9. Experiments for children (video): soap cube

10. Chemical experiments for children (video): how to make a lava lamp with your own hands

Entertaining chemistry experiments will prepare children for studying chemistry at school. Most of the experiments carried out at home are not dangerous, informative, spectacular. Some experiments are provided with a written description that will help explain to the child the essence of the ongoing processes and arouse interest in chemical science.

When conducting chemical experiments at home, the following safety rules must be observed:

Simple experiments for the little ones

Chemical experiments for young children, carried out at home, do not require any special substances.

colored bubbles

For one such experiment you will need:

• fruit juice;
• sunflower oil;
• 2 effervescent tablets;
• decorative transparent container.

Stages of experience:

You can create bubbles with a stronger shell yourself by mixing water and dishwashing detergent in a combination of 2: 1 + a little granulated sugar. If glycerin is added instead of sugar, the bubbles will reach very large sizes. Adding food coloring to the soap solution will produce colored luminous bubbles.

night light

At home, with the help of simple substances, you can make a night light. This will require:

• tomato;
• syringe;
• sulfur heads from matches;
• hydrogen peroxide;
• bleach.

Sequencing:

1. Sulfur is placed in a bowl, poured with bleach, insisted for a while.
2. Draw the mixture into a syringe, cut off the tomato from all sides.
3. To start a chemical reaction, hydrogen peroxide must be introduced. This is also done with a syringe in the place where the petiole was.
4. When in a dark room, the tomato will emit a soft light.

Carefully! There is no longer such a tomato.

sizzling balls

You can make your own sizzling balls for baby bathing.

During operation, hands must be protected with gloves.

Sequencing:

floating worms

For the next experiment you will need:

• 3 worm jelly candies without sugar sprinkles;
• soda;
• acetic acid;
• water;
• glass glasses.

Stages of work:

1. The first glass is half filled with acetic acid.
2. Pour warm water into the second glass and dilute 60 g of soda.
3. Put the sweets into the solution, leave for 15 minutes.
4. Take the sweets out of the soda solution and place them in a glass of essence.
5. The surface of the sweets will immediately be covered with bubbles, they will continuously rise to the surface and sink to the bottom of the glass. This is because the baking soda first fills the pores of the candy, then reacts with the vinegar to release carbon dioxide, which lifts the candy to the top.
6. When in contact with air, the bubbles burst, the candy sinks to the bottom and again becomes covered with bubbles and rises.

Experiments for older children

Chemical experiments for children at home can be more complex and interesting.

Volcano

So, any student will be able to simulate a volcanic eruption at home:

colored foam

For the experience of creating colored foam you will need:

Sequencing:

1. The glasses are placed on a tray, half filled with soda, dyes are added.
2. Vinegar mixed with detergent, pour into glasses.
3. Colored foam will come out of each glass. You can pour the vinegar mixture into glasses several times until all the soda comes out.

Malachite egg

The experiment on dyeing a chicken egg in the color of malachite is long, but interesting:

1. To do this, the contents are removed from the egg: 2 holes are made and blown out.
2. For weight, a little plasticine is placed in an empty egg.
3. A spoonful of copper sulfate is dissolved in 0.5 liters of water (it can be purchased at a hardware store).
4. Dip the egg into the solution, the shell must be completely immersed in the solution.
5. After a few days, gas bubbles will appear.
6. After a week, the shell will acquire a light blue-green color.
7. After a month, the color of the shell will become saturated malachite.

Fireworks

Making fireworks with your own hands:

1. Magnesium shavings are very crushed.
2. The sulfur heads of the matches are separated from the wood. You will need 2-3 boxes of matches. Crushed magnesium is mixed with sulfur powder.
3. Take a metal tube and seal tightly one of the holes with plaster.
4. Pour a mixture of magnesium and sulfur into the tube. The mixture should not occupy more than half of the tube.
5. The tube is wrapped several times with foil. A wick is inserted into the free hole.
6. You can blow up such fireworks only in deserted places.

Coloring water blue

To color a colorless liquid blue, you need:

• alcohol solution of iodine;
• hydrogen peroxide;
• vitamin C tablet;
• starch;
• glass glasses.

Performing the experience step by step:

1. A tablet of vitamin C is ground into powder, dissolved in 55 ml of warm water.
2. Pour 5 ml of the resulting solution into a glass, add 5 ml of iodine and 55 ml of heated water. The iodine should be colorless.
3. Separately, 18 ml of hydrogen peroxide, 5 g of starch, 55 ml of water are mixed.
4. The iodine solution is poured back and forth into the starch solution several times.
5. The colorless liquid will turn dark blue. Iodine loses its color when it reacts with vitamin C. Starch turns blue when mixed with iodine.

Simple experiments on the properties of metals

Chemical experiments for children at home can be carried out with metals.

For simple experiments you will need:

• fire;
• pieces of various metals;
• foil;
• copper sulfate;
• ammonia;
• acid.

To experiment with copper wire, a small piece of metal is twisted into a spiral and strongly heated over a fire. Then immediately lowered into a container with ammonia. The reaction will take place instantly: the metal will begin to hiss, and the black coating formed when exposed to fire will come off. The copper wire will shine again. It is better to do the experiment several times, then the color of the ammonia will turn blue.

For the next experiment, solid iodine, crushed aluminum, warm water will be required. Iodine is mixed with aluminum in equal proportions. Water is added to the mixture. The powder begins to burn, emitting purple smoke.

Another experiment will include:

• chrome-plated paper clip;
• galvanized steel nail;
• pure steel screw;
• acetic acid;
• 3 tubes.

Stages of experience:

1. Metal objects are placed in test tubes, filled with acid, left for observation. In the first days, hydrogen evolution is observed.
2. On the 4th day, acid in test tubes with coated metal objects starts to turn red. In a test tube with a steel screw, the acid turns orange, and a precipitate appears.
3. After 2 weeks, in a test tube with a paperclip, the acid turns red, but only in the upper layers. Where the paper clip is located, the acid is colorless. After removing the paper clip, you can see that its appearance has not changed.
4. Acid in a test tube with a nail is colored with a smooth transition from red to pale yellow. The nail hasn't changed.
5. In the 3rd test tube, layered coloring of the liquid and a precipitate are also observed. The screw turned black, the upper microlayers of metal collapsed.

Conclusion: unprotected iron is subject to corrosion.

For the next experiment, you need to prepare a blue solution of copper sulfate (dissolve a few crystals in water, stir). Put non-rusty nails in a test tube, fill with a solution. After a while, the solution will turn green, and the nails will turn copper-colored. This happened because the iron displaced copper from the liquid, the displaced copper settled on metal objects.

To conduct the Hydrogen Glove experiment, you will need:

Sequencing:

1. Salt solution and copper sulphate solution are simultaneously poured into the flask. When mixed, a sea-green liquid is obtained.
2. Make a lump out of foil and place it in the hole of the flask. Hydrogen immediately begins to evolve violently.
3. Put on a rubber glove on the neck, it instantly fills with gas.
4. On contact with fire, the glove ruptures and the gas ignites. The liquid in the vessel gradually acquires a dirty gray hue.

The most spectacular chemistry experiments for children

Chemical experiments for children at home are very diverse, and some are very effective.

colored foam

To make a large amount of colored foam you need:

bleached brilliant green

For the bleaching experiment, you will need:

• brilliant green solution;
• glasses;
• bleach;
• ammonia;
• vinegar;
• hydrogen peroxide;
• activated charcoal tablets.

Sequencing:

1. Water is poured into 6 glasses, a drop of greenery is added to each.
2. The 1st glass is set aside for comparison, bleach is added to 2, ammonia is added to 3, and peroxide is added to 4.
3. Ammonia instantly discolors the liquid.
4. Small bubbles appeared in a glass of bleach, the solution became colorless.
5. Hydrogen peroxide will discolor the liquid gradually, over about 15 minutes.
6. Vinegar added to the solution will make the liquid brighter.
7. After 30 min. the liquid is bright.
8. Activated charcoal brightens the solution.

pharaoh snake

Conducting an experiment called "Pharaoh's Serpent" will require:

Stages of experience:

1. The sand is impregnated with alcohol and formed into a cone.
2. A recess is made at the top.
3. Soda is mixed with sugar, poured into a recess.
4. Ignite the soaked sand.
5. The mixture will turn into black balls, soda and sugar will begin to decompose.
6. After burning alcohol, a snake will appear, consisting of the products of burning sugar.

Pharaoh snake made of sugar and soda:

Fire without a spark

To get a fire without a spark, potassium permanganate, glycerin and paper are needed.

Sequencing:

1. Place about 1.5 g of potassium permanganate powder in the center of a sheet of paper, cover with the free edge of the sheet.
2. Apply 3 drops of glycerin to the paper in the place where the powder is located.
3. After 30 seconds, potassium permanganate will begin to hiss, smoke and give black foam. The exothermic reaction will heat up the paper and it will ignite.

Fireworks

To make a small firework at home, you need to pick up a small refractory dish with a long handle.

Sequencing:

1. On a paper sheet, you need to pour a crushed tablet of activated carbon, the same amount of potassium permanganate and the same amount of iron filings.
2. Fold a sheet of paper in half to combine the powders (powders should not be stirred with spoons or spatulas: they can ignite).
3. Carefully pour into a refractory dish, heat over the included burner. After a few seconds. the heated mixture will begin to emit sparks.

Chemical kits for children

Chemical experiments for children at home will help to conduct special sets of substances and tools.

Set for experiments "Volcano"

Designed for children from 14 years old, allows you to independently reproduce the eruption of a small volcano.

Equipment:

To conduct the experiment, you first need to make the volcano itself, sand or gypsum is suitable as a material. When the mountain has frozen, a special powder is poured into the recess and set on fire. The substance begins to burn spectacularly, throw out sparks, and ash appears.

The advantages of such an experiment include a visual representation of flammable substances. Disadvantages: the presence of harmful substances, can be used only 1 time.

Price: 440 rubles.

Chemistry set

The kit provides for the cultivation of crystals at home.

The set includes:

• ammonium crystal;
• dye;
• polypropylene container;
• gloves;
• colored glass base;
• mixing tool;
• instruction.

Stages of work:

• Crystalline powder is poured into the container, mixed with 150 ml of boiling water.
• Stir until complete dissolution.
• The base of the crystal is dipped into the liquid.
• Cover with a lid for 60 minutes.
• The substance is poured into the cooled water to form a crystal, the lid is closed.
• After a day, remove the cover.
• Wait until the top of the crystal appears above the water.
• The water is drained, the crystal is taken out and dried.

The experience is very interesting for children, it is practically safe, but it will take at least 4 days to complete it.

Set cost: 350 rubles.

Set for chemical experiments "Traffic light"

Set includes:

• sodium hydroxide;
• glucose;
• indigo carmine;
• 2 measuring cups;
• gloves.

Experience Sequence:

1. Glucose (4 tablets) is dissolved in the 1st glass, using a small amount of boiling water for this. Add 10 mg sodium hydroxide solution.
2. In the 2nd glass dissolve a little indigo carmine.
3. In the resulting blue liquid, a solution of glucose with alkali is poured.
4. When the solutions are mixed, the liquid will turn green (oxygen contained in the air oxidizes indigo carmine).
5. Gradually the solution will turn red, then yellow. If the vessel with the yellow solution is shaken, the liquid will turn green again, followed by red and yellow.

The experiment is spectacular, interesting and safe. The disadvantages include insufficiently detailed instructions.

Set price: 350 rubles.

Advantages and disadvantages of home experiments

Name of experience	Advantages	Flaws
pharaoh snake	Availability of materials, entertainment	not safe
Growing crystals	Complete security, visibility	The experiment is quite long
Volcano	Visually demonstrates the interaction of substances	Lengthy preparations for experience
Experiment on the interaction of metals with various liquids	efficiency, safety	Requires a lot of time to
home fireworks	Spectacle and availability of substances used	not safe

Most chemical home experiments, if carried out correctly, do not harm the health of the child, but it is better to conduct them under the supervision of adults. All the necessary substances can be found in any kitchen.

Experiments will reveal to children the secrets of the interaction of substances and arouse interest in understanding the world.

Article formatting: Svetlana Ovsyanikova

Video on the topic: chemical experiments for children

Home miracle laboratory: chemical experiments for children:

Scientific discoveries have given mankind many original ideas. On rainy days or when you're bored, some of them are a great way to have some fun. We offer 10 cool experiments for review. They can be carried out at home even by children, but preferably under adult supervision. These experiments use elementary ingredients that are always in the kitchen. Simple but interesting tricks are based on the principles of chemistry, physics and biology. Well, let's get started!

What you need: A raw egg, two bowls (or plates), an empty water bottle.

The 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. Opening the plastic container, you will see how the yolk is sucked into the bottle - together with air, it hurries to occupy the empty volume.

Why is this happening? After compression, part 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 be needed? Water, cornstarch, deep mixing bowl, food coloring. Put on old clothes so as not to get dirty and cover the table with oilcloth.

The progress of the experiment. Pour a glass of water into a deep bowl, then pour a glass of corn starch into the same place and mix everything well. Food coloring can be added if desired. Now slowly dip your hand into the mixture. As you can see, this is very easy to do. Do the same, but with effort - as a result, the substance will "repel" the hand.

Why is this happening? Oobleck is a non-Newtonian substance. Sometimes (for example, when it is poured), it manifests itself as a liquid. But! When you put pressure on the mixture, it behaves like a solid body, and on impact it can even act repulsively.

Soda and vinegar - instead of a pump!

What we need: regular vinegar, narrow-necked bottles, balloons, baking soda.

The progress of the experiment. A mini-geyser is made according to a similar principle, but we slightly modify the well-known experiment. Pour into bottles of 50-100 grams of vinegar. Having made a roll out of paper, we lay one end of it in a balloon that needs to be inflated. Inside the other end of a kind of tube, we fall asleep 2-3 tablespoons of soda. Now you need to carefully put the balls on the necks of the bottles. Be careful not to spill the soda out of these rubber containers prematurely. The preparations are over, you can proceed to the most interesting. Pour the contents of the balls into the bottle and enjoy watching.

Why is this happening? 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 it.

Coloring flowers by capillary method

What you need: fresh white flowers (daisies and carnations are great, you can even use celery for lack of flowers), glass jar, food coloring, scissors. We also advise you to be patient, because you will see the full result of the experiment only after 24 hours. But after a while, you can watch how an amazing reincarnation takes place.

The progress of the experiment. Pour water inside the jar, add a dye of any color there. We lower the flowers into this liquid, and observe how the delicate white petals gradually turn into a different color.

Why is this happening? Water evaporates from the petals of the flower, 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 be needed? Unopened cans of diet and sugary drinks, a large container of water (a bath will also work for this experience).

The progress of the experiment. Submerge soda cans in water. Not all of them will sink to the bottom. The ones left floating below the surface contain a lot of sugar. "Heavy" drinks can safely drink fans of diets.

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

magic pouch

What you need: Zipper bag, a pair of sharpened pencils, a glass of water. We recommend doing the experiment on the sink or bathtub, as the temptation to pull out the pencils after the experiment will be great!

The progress of the experiment. Fill the bag with water and seal. Then we quickly pierce it through with several pencils, in turn. As you can see, the holes did not even give a gap - the bag remained completely sealed.

Why is this happening? The tight bag with a fastener consists of flexible polymers. When punctured, the plastic surface is hermetically sealed around the pencil, so it does not leak.

Cleaning copper coins at home

What will we need? Darkened coins, 1/4 cup white vinegar, one teaspoon of salt, a glass of water, two bowls (non-metallic), paper towels. We recommend wearing goggles to protect your eyes.

The progress of the experiment. Pour water, vinegar and salt into a bowl. We put coins in the prepared solution. After a while, we evaluate the degree of their purification.

How it works? Acetic acid reacts with salt, which helps to clean copper pennies from copper oxide. Rinse the coins with water after the experiment, otherwise they will turn greenish. After clearing a dozen copper coins, do another interesting experience. Put a metal coin into the old solution. You will see the steel color change to yellowish. This happened because the metal attracted copper oxide molecules to itself.

flying ghosts

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

The progress of the experiment. We glue the paper figures at one end to the table with adhesive tape. Then we strongly rub the balloon on clothes or hair, and bring it closer to the lying silhouettes. Oh no! The ghosts have woken up and are trying to fly!

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

The Dancing Raisin Experience

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

The progress of the experiment. This experience is extremely simple. Pour mineral water into a glass. We also add a handful of raisins there, and watch how it “dances” in a glass container.

Why is this happening? Tiny bubbles of 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.

color milk painting

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

The progress of the experiment. Pour some milk into the bowl - just to cover the bottom. Then we drip a colored dye on its surface. Having dipped a cotton swab in liquid soap, we touch the epicenter of color blotches 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 droplets stick to the surface at first. But adding soap to the tip of a Q-tip breaks the surface tension of the milk by dissolving the fat molecules. The paint molecules move smoothly over the milky surface, starting from the soap layer.

Do these interesting experiments at home, with your children or in a friendly company. You yourself will not notice how quickly time will fly by for this useful entertainment, and the inquisitive minds of young know-it-alls will board all new scientific peaks.

Doing chemistry experiments at home is very exciting. You can feel like a little experimenter, a little pioneer, a little magician.

Here pink and transparent solutions are mixed, the result is green. A cloud flew into the bottle on the windowsill. When heated, a mysterious message appears on a clean sheet, and snakes crawled out of the burning sand. You say that this is impossible and without magic it could not have done? But all these phenomena are based on chemical laws. And for their implementation, you will need "reagents" that everyone has at home, or they can be purchased at a regular pharmacy.

Buy chemical experiments for children

Now in the department for schoolchildren you can see kits for a young chemist. This kit contains materials for 3-5 experiments. It's interesting, it's exciting and spectacular. In addition, a child who sets up an experiment with his own hands and examines the result will find it easier to understand what the teacher is talking about in a chemistry lesson. The only negative is that these kits are not cheap. But many experiments can be done by looking for reagents at home.

Chemical experiments for children at home: "A cloud in a bottle"

Pour 1 tbsp into a clear plastic bottle. l. alcohol (can be replaced with water, but the reaction will be less active). Twist the bottle so that the alcohol spreads along the walls. Start pumping air into the bottle with the pump (20 pumps is enough). Remove the pump, the bottle has become cold and a cloud will appear in it.

Explanation.

Water molecules, evaporating (alcohol evaporates faster), hover in the air. In the experiment, "water" evaporated from the walls. As the pressure in the bottle increases, the molecules collide and contract. With a sharp drop in pressure, the air temperature drops sharply. This causes the "water" molecules to stick together or condense in the air into small droplets - clouds.

Chemical experiments for children video

Chemistry experiments for children games: "Spy"

Who in childhood did not dream of having a pen with invisible ink, when what is written comes through only with a special impact, and an outsider sees only a blank sheet? Such ink can be made in at least 2 ways.

Method 1. Dip the brush in milk (or soda solution) and start writing a message on white paper. After the milk dries, the leaf will become clean again. But if you iron it with an iron, the image will be visible on it.

Explanation.

The ink begins to show when exposed to heat. The combustion temperature of milk is much lower than that of paper. And when the milk "burns", the paper remains white.

Method 2. Lemon juice or thick rice water is used instead of milk. And the role of the developer is water with a few drops of iodine.

Chemical experiments for children at home "Egg Ball"

Put a raw egg (preferably with a brown shell) in a glass jar and pour over the vinegar. After a few hours, the shell will begin to "bubble". After 7-8 hours, the shell will dissolve and the egg will turn white. Leave the egg in the solution for a week.

Remove the egg from the solution after 7 days. The vinegar stays clear and the egg looks like a rubber ball. If you go into a dark room with an egg and shine a flashlight on it, it will begin to reflect light. And if you bring the light source closer, then the egg will be enlightened through.

Explanation.

The main component of the eggshell is calcium carbonate. Vinegar dissolves calcium. This process is called decalcification. The shell first becomes soft, and after a while it disappears.

Chemical experiments for children at home video

Chemical experiments at home for children "Volcano Eruption"

Take the Mentos out of the package. Place a bottle half-full of cola on the floor. Quickly pour Mentos into a bottle and run away, otherwise it will foam.

Explanation.

The rough surface of candy is where carbon dioxide is released. The reaction is enhanced by Asparam (a sweetener in cola), which reduces the surface tension of water, and therefore facilitates the release of CO2, sodium benzoate, caffeine; gelatin, gum arabic in dragee.

Think next time, maybe you should not drink delicious cola, so as not to provoke a similar reaction in your stomach?

Chemical experiments for children animation: "Crawling snakes"

The biblical legend says that Moses, arguing with the pharaoh, could not convince him and threw his staff on the ground, turning him into a snake. Now scientists have come to the conclusion that it was not a snake, but a chemical reaction.

Sulfanilamide snake.

Attach a streptocide tablet to a wire and heat over an open fire. Snakes will start to crawl out of the medicine. If you pick up one of them with tweezers, the snake will be long.

Explanation.

Any sulfanilamide tablet (sulgin, etazol, sulfadimethoxine, sulfadimezin, biseptol, fthalazol) is suitable for the experiment. During the heating of the preparation, rapid oxidation occurs in it with the release of gaseous substances (hydrogen sulfide and water vapor). The gas swells the mass and forms a "snake".

"Sweet" viper.

Pour 100 gr. sifted sand and soak it with 95% alcohol. Form a hill with a "crater" in the middle. Mix 1 teaspoon of icing sugar and ¼ teaspoon of baking soda and pour into a depression in the sand.

Ignite the alcohol (it takes several minutes to ignite). Black balls will begin to appear on the surface, black liquid will accumulate below. When the alcohol burns out, the mixture will turn black and a black snake will begin to crawl out of it, wriggling.

Explanation.

When soda decomposes and alcohol burns, carbon dioxide (CO2) and water vapor are released. Gases swell the mass, provoking it to crawl. The body of a snake is made up of small particles of coal mixed with sodium carbonate (Na2CO3), which is formed when sugar is burned).