What can be done at home from chemicals. Experiments for children: lemon volcano

Who loved at school laboratory works in chemistry? It is interesting, after all, it was to mix something with something and get a new substance. True, it didn’t always work out the way it was described in the textbook, but no one suffered about this, did they? The main thing is that something happens, and we saw it right in front of us.

If in real life if you are not a chemist and do not face much more complex experiments every day at work, then these experiments that can be carried out at home will definitely amuse you, at least.

lava lamp

For experience you need:
– Transparent bottle or vase
— Water
- Sunflower oil
- Food coloring
- Several effervescent tablets "Suprastin"

Mix water with food coloring sunflower oil. You don't need to mix, and you won't be able to. When a clear line between water and oil is visible, we throw a couple of Suprastin tablets into the container. Watching lava flows.

Since the density of oil is lower than that of water, it remains on the surface, with an effervescent tablet creating bubbles that carry water to the surface.

Elephant Toothpaste

For experience you need:
- Bottle
- small cup
— Water
- Dish detergent or liquid soap
- Hydrogen peroxide
— Fast acting nutritional yeast
- Food coloring

Mix liquid soap, hydrogen peroxide and food coloring in a bottle. In a separate cup, dilute the yeast with water and pour the resulting mixture into a bottle. We look at the eruption.

Yeast releases oxygen, which reacts with hydrogen and is pushed out. Because of soap suds the result is a dense mass erupting from the bottle.

Hot Ice

For experience you need:
- container for heating
- Clear glass cup
- Plate
- 200 g baking soda
- 200 ml of acetic acid or 150 ml of its concentrate
- crystallized salt

Mix in a saucepan acetic acid and soda, wait until the mixture stops sizzling. We turn on the stove and evaporate excess moisture until an oily film appears on the surface. The resulting solution is poured into a clean container and cooled to room temperature. Then add a crystal of soda and watch how the water “freezes” and the container becomes hot.

Heated and mixed vinegar and soda form sodium acetate, which, when melted, becomes aqueous solution sodium acetate. When salt is added to it, it begins to crystallize and release heat.

rainbow in milk

For experience you need:
- Milk
- Plate
- Liquid food coloring in several colors
- cotton swab
— Detergent

Pour milk into a plate, drip dyes in several places. Wet a cotton swab in detergent, dip it into a bowl of milk. Let's see the rainbow.

In the liquid part there is a suspension of droplets of fat, which, in contact with detergent split and rush from the inserted stick in all directions. A regular circle is formed due to surface tension.

Smoke without fire

For experience you need:
– Hydroperite
— Analgin
- Mortar and pestle (can be replaced with a ceramic cup and spoon)

The experiment is best done in a well-ventilated area.
We grind hydroperite tablets to a powder, we do the same with analgin. We mix the resulting powders, wait a bit, see what happens.

During the reaction, hydrogen sulfide, water and oxygen are formed. This leads to partial hydrolysis with the elimination of methylamine, which interacts with hydrogen sulfide, a suspension of its small crystals which resembles smoke.

pharaoh snake

For experience you need:
- Calcium gluconate
- Dry fuel
- Matches or lighter

We put several tablets of calcium gluconate on dry fuel, set fire to it. Let's look at the snakes.

Calcium gluconate decomposes when heated, which leads to an increase in the volume of the mixture.

non-newtonian fluid

For experience you need:

- mixing bowl
- 200 g cornstarch
- 400 ml of water

Gradually add water to the starch and stir. Try to make the mixture homogeneous. Now try to roll the ball out of the resulting mass and hold it.

The so-called non-Newtonian fluid behaves like a solid body during fast interaction, and like a liquid during slow interaction.

Friends, good afternoon! Agree, how sometimes it is interesting to surprise our crumbs! They have such a funny reaction to. She shows that they are ready to learn, ready to assimilate new material. The whole world opens at this moment before them and for them! And we, parents, act as real wizards with a hat, from which we “pull out” something amazingly interesting, new and very important!

What will we get out of the "magic" hat today? We have 25 experimental experiments there for children and adults. They will be prepared for babies different ages to get them interested and involved in the process. Some can be carried out without any preparation, with the help of handy tools that each of us has at home. For others, you and I will buy some materials so that everything goes smoothly for us. Well? I wish all of us good luck and forward!

Today will be real holiday! And in our program:

So let's decorate the holiday by preparing an experiment for a birthday, New Year, March 8, etc.

Ice bubbles

What do you think would happen if simple bubbles that crumble in 4 years so loves to inflate, run after them and burst them, inflate them in the cold. Or rather, right into the snowdrift.

I give you a hint:

• they will burst immediately!
• take off and fly away!
• freeze!

Whatever you choose, I say right away, it will surprise you! Can you imagine what will happen to the little one?

But in slow motion - it's just a fairy tale!

I complicate the question. Is it possible to repeat the experience in the summer in order to get a similar option?

Choose answers:

• Yes. But you need ice from the fridge.

You know, even though I so want to tell you everything, but that’s exactly what I won’t do! Let there be at least one surprise for you!

Paper vs water

We are waiting for the real experiment. Is it really possible for paper to win over water? This is a challenge for everyone who plays Rock-Paper-Scissors!

What we need:

• Paper;
• Water in a glass.

Cover the glass. It would be nice if its edges were a little wet, then the paper will stick. Gently turn the glass upside down... No water leaks!

Inflate balloons without breathing?

We have already carried out chemical children's experiences. Remember, there the very first for very small crumbs was a room with vinegar and soda. So, let's continue! And we use the energy, or rather, the air that is released during the reaction for peaceful purposes.

Ingredients:

• Soda;
• The bottle is plastic;
• Vinegar;
• Ball.

Pour soda into a bottle and pour 1/3 of vinegar. Shake lightly and quickly pull the ball over the neck. When it inflates, bandage and remove from the bottle.

Such an experience a small one will be able to show even in kindergarten.

Rain from a cloud

We need:

• Bank with water;
• Shaving foam;
• Food coloring (any color, you can use several colors).

We make a cloud of foam. Big and beautiful cloud! Leave it to the best cloud maker, your child 5 years. He will definitely make her real!

photo author

It remains only to distribute the dye over the cloud, and ... drop-drip! Rain is coming!

Rainbow

Maybe, physics children are still unknown. But after they make the Rainbow, they will definitely love this science!

• Deep transparent container with water;
• Mirror;
• Flashlight;
• paper.

Place a mirror at the bottom of the container. At a slight angle, shine a flashlight on the mirror. It remains to catch the Rainbow on paper.

Even easier is to use a disc and a flashlight.

crystals

There is a similar, only already finished game. But our experience interesting the fact that we ourselves, from the very beginning, will grow crystals from salt in water. To do this, take a thread or wire. And we will hold it for several days in such salty water, where the salt can no longer dissolve, but accumulates in a layer on the wire.

Can be grown from sugar

lava jar

If you add oil to a jar of water, it will all collect on top. It can be tinted with food coloring. But in order for the bright oil to sink to the bottom, you need to pour salt on top of it. Then the oil will settle. But not for long. The salt will gradually dissolve and “release” beautiful droplets of oil. Colored oil rises gradually, as if a mysterious volcano seething inside the jar.

Eruption

For toddlers 7 years it will be very interesting to blow up, demolish, destroy something. In a word, the real element is for them. and therefore we create a real, exploding volcano!

We sculpt from plasticine or make a “mountain” from cardboard. We put a jar inside it. Yes, so that her neck fits the "crater". We fill the jar with soda, dye, warm water and ... vinegar. And everything will begin to “explode, the lava will rush up and flood everything around!

A hole in the bag is not a problem.

This is what convinces book scientific experiments for children and adults Dmitry Mokhov "Simple Science". And we can verify this statement ourselves! First, let's fill the bag with water. and then we pierce it. But what they pierced (a pencil, a toothpick or a pin) will not be removed. Are we running out of water? Checking!

Water that does not spill

Only such water still needs to be made.

We take water, paint and starch (as much as water) and mix. Eventually - ordinary water. Just don't spill it!

"Slippery" egg

In order for the egg to really crawl into the neck of the bottle, it is worth setting fire to a piece of paper and throwing it into the bottle. And cover the hole with an egg. When the fire is out, the egg will slip inside.

snow in summer

This trick is especially interesting to repeat in the warm season. Remove the contents of the diapers and soak with water. All! Snow is ready! Now such snow is easy to find in the store in children's toys. Ask the seller artificial snow. And don't ruin diapers.

moving snakes

To make a moving figure, we need:

• Sand;
• Alcohol;
• Sugar;
• Soda;
• Fire.

Pour alcohol on a hill of sand and let it soak. Then pour sugar and soda on top, and set fire! Oh what a funny this experiment! Kids and adults will love what the snake comes to life!

Of course, this is for older children. Yes, and it looks pretty scary!

battery train

The copper wire, which we twist into an even spiral, will become our tunnel. How? Connect its edges, forming a round tunnel. But before that, we “launch” the battery inside, we only attach neodymium magnets to its edges. And consider yourself a perpetual motion machine! The steam locomotive drove off.

Candle swing

To light both ends of the candle, you need to clean the bottom of it to the wick from wax. Heat the needle over the fire and pierce the candle in the middle with it. Put the candle on 2 glasses so that it rests on the needle. Burn the edges and wiggle slightly. Then the candle itself will swing.

Elephant Tooth Paste

The elephant needs everything big and much. Let's do it! We dissolve potassium permanganate in water. Add liquid soap. The final ingredient, hydrogen peroxide, turns our mixture into giant elephant paste!

Let's drink a candle

For a greater effect, we color the water in bright color. We put a candle in the middle of the saucer. We set it on fire and cover it with a transparent container. Pour water into a saucer. At first, the water will be around the container, but then everything will soak inside, to the candle.
Oxygen is burned, the pressure inside the glass decreases and

Real chameleon

What will help our chameleon change color? Cunning! Give your toddler 6 years decorate in different colors plastic plate. And you yourself cut out the figure of a chameleon on another plate, similar in shape and size. It remains not to firmly connect both plates in the middle so that the upper one, with a cut out figure, can rotate. Then the color of the animal will always change.

Light up the rainbow

Arrange the Skittles on a plate in a circle. Pour water into the bowl. just wait a bit and get a rainbow!

smoke rings

Cut off the bottom plastic bottle. And pull the cut edge balloon to get a membrane like in the photo. ignite incense stick and put it in a bottle. Close the lid. When there is solid smoke in the jar, unscrew the lid and tap on the membrane. Smoke will come out in rings.

colorful liquid

To make everything look more spectacular, paint the liquid in different colors. Make 2-3 blanks of colored water. pour water of the same color into the bottom of the jar. Then carefully, along the wall with different parties pour vegetable oil. Pour water mixed with alcohol over it.

Egg without shell

Put a raw egg in vinegar for at least a day, some say for a week. And the focus is ready! An egg without a hard shell.
The egg shell is rich in calcium. Vinegar reacts actively with calcium and gradually dissolves it. As a result, the egg is covered with a film, but completely without a shell. It feels like an elastic ball to the touch.
Also, the egg will be larger than its original size, as it will absorb some of the vinegar.

Dancing little men

It's time to mess around! Mix 2 parts cornstarch with 1 part water. Put a bowl of starchy liquid on top of your speakers and turn up the bass!

Decorating the ice

We decorate ice figures of various shapes with the help, mixed with water and salt, food grade paint. Salt corrodes the ice and seeps deep, forming interesting passages. Great idea color therapy.

Launching paper rockets

We free tea bags from tea by cutting off the top. We set fire! Warm air lifts the package!

There are so many experiences that you will definitely find something to do with children, just choose! And don't forget to come back for a new article that you'll find out about if you subscribe! Invite your friends to visit us! And that's all for today! Bye!

Entertaining chemistry experiments will prepare children for studying chemistry at school. Most of experiments carried out at home are not dangerous, informative, effective. 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 home must be observed following rules security:

Simple experiments for the little ones

Chemical experiments for young children conducted in home environment, 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. Addendum to soap solution food coloring will allow you to get colored glowing 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 chemical reaction hydrogen peroxide is required. 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 soda first fills the pores of the candy, then, reacting with the vinegar, releases carbon dioxide, which raises 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

Coloring experiment chicken egg in the color of malachite 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. Dissolve a spoon in 0.5 liters of water blue vitriol(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

For coloring a colorless liquid Blue colour needed:

• 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 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. 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 acquires Orange color, a precipitate appears.
3. After 2 weeks in a test tube with a paperclip, the acid turns red, but only in upper layers. Where the paper clip is located, the acid is colorless. After removing the staple, you can see that it appearance 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 number of colored foam need:

bleached brilliant green

For the bleaching experiment, you will need:

• brilliant green solution;
• glasses;
• bleach;
• ammonia;
• vinegar;
• hydrogen peroxide;
• pills activated carbon.

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. Cons: availability harmful substances, can only be used once.

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:

In high school, they start chemistry not earlier than the 8th grade, this science is too difficult for children to perceive. But you can prepare a student for the subject in a very simple and boring way - by organizing an experiment in chemistry at home. Such mini-experiments will help to look at science from a different angle, and showing "chemical tricks" on children's holiday significantly increase the degree of fun.

Fireproof banknote

To carry out an incredibly effective, but simple trick, you will need:

• bill;
• water-alcohol solution with an alcohol content of about 50%;
• salt;
• tweezers or tweezers.

A pinch of salt must be added to the solution. Next, a bill is placed in the solution with the help of tweezers. For those who are conducting such an experiment in chemistry for the first time, it is better to take a denomination of a smaller denomination!

After the money is thoroughly wet, they should be picked up again with tweezers and slightly shake off excess liquid from the paper. Now you can set it on fire! The fire will pass through the entire banknote, but not a single edge will even turn red. This is due to the fact that the alcohol contained in the solution burns. In turn, the water that the paper has been soaked with does not have time to evaporate.

crystal eggs

Growing crystals is one of the popular hobbies that offers entertaining chemistry. Experiments with crystallization are most often carried out on sugar, but sugar crystals no longer surprise anyone. We offer a new and unusual spectacle - crystals grown on eggs!

Crystal eggs can be obtained using:

• alum (sold in a pharmacy);
• PVA glue;
• dyes.

Crystals on the eggs will grow very quickly, in just a day. You must first wash the shell and dry it thoroughly. After that, the eggs are smeared with glue and sprinkled with alum. Now they need to lie down for several hours to dry again.

Next, the dye must be dissolved in two glasses of plain water. The amount of dye can be chosen independently, in this case only the color intensity of the crystals depends on it. Eggs are placed in the dye for a day or a day. How longer egg lies in solution, the larger the crystals grow. It is worth taking out ready-made crystal eggs carefully - they are quite fragile.

balloon on bottle

How can you inflate a balloon without helium without any physical effort? To do this, you can use the usual baking soda and vinegar, which are in the closet in the kitchen of every mother. To conduct this experiment in chemistry, you will need:

• balloon;
• bottle;
• 3-4 teaspoons of soda;
• table vinegar.

Soda is poured directly into the ball using a funnel or spoon. After which it is put on a bottle with a small amount vinegar. As soon as the soda from the balloon begins to wake up in the bottle, it begins to swell, as if from helium. This is due to the fact that vinegar reacts with baking soda, releasing carbon dioxide. The balloon inflates thanks to the gas in a few seconds, just catch it!

Multi-colored layers in a bottle

The following experiment in chemistry will clearly explain to the child the concept of the density of a liquid. For this you will need:

• a quarter cup of sunflower oil;
• a quarter cup of water, tinted in any bright color;
• quarter glass sugar syrup(for spectacular focus, it is also worth adding a dye to it).

The child can predict in advance what will happen when all these liquids are mixed. He will like the result - the syrup will settle down as the densest, the water will be located in the middle, and the oil will remain on top. You can experiment with colors and liquids, making unthinkable compositions. For example, adding different amount sugar into syrup, you can get several liquids of different densities.

Laboratory experiments in chemistry can be quite boring. Such spectacular yet simple tricks will help encourage your child to study science and simply entertain on a rainy day.

How to interest a child in the knowledge of new substances and the properties of various objects and liquids? At home, you can arrange an impromptu chemical laboratory and conduct simple chemical experiments for children at home.

Transformations will be original and appropriate in honor of any festive event or in the most normal conditions to familiarize the child with the properties of different materials. Here are some simple magic tricks that are easy to do at home.

Chemical experiments using ink

Take a small container with water, preferably with transparent walls.

Dissolve a drop of ink or ink in it - the water will turn blue.

Add one pre-crushed activated charcoal tablet to the solution.

Then shake the container well and you will see that it will gradually become light, without a shade of paint. Charcoal powder has an absorbent property, and the water takes on its original color.

https://galaset.ru/holidays/contests/tests.html

Trying to create clouds at home

Take a tall jar and pour some hot water(about 3 cm). Prepare ice cubes in the freezer and place them on a flat baking sheet, which you place on top of the jar.

The hot air in the jar will cool, forming water vapor. The molecules of the condensate will begin to clump together in the form of a cloud. This transformation demonstrates the origin of clouds in nature when warm air is cooled. Why is it raining?

Drops of water on the ground are heated and rise up. There they cool and meet each other to form into clouds. Then the clouds also combine into heavy formations, and fall to the ground as precipitation. Watch the video chemical experiments for children at home.

Feelings for hands at different water temperatures

You will need three deep bowls of water - cold, hot and room temperature.

The child must touch with one hand cold water and the other is hot.

After a couple of minutes, both hands are placed in a vessel with water at room temperature. How does water feel to him? Is there a difference in perception temperature?

Water can soak up and stain the plant

For this beautiful transformation, you need a living plant or flower stem.

Place it in a glass of water dyed in any bright color (red, blue, yellow).

Gradually notice that the plant turns the same color.

This happens because the stem absorbs water and takes on its color. In the language of chemical phenomena, such a process is usually called osmosis or one-way diffusion.

You can make a fire extinguisher yourself at home

Necessary actions:

1. Let's take a candle.
2. It is necessary to light it, and place it in a jar so that it stands straight, and the flame does not reach its edges.
3. Carefully place a teaspoon of baking powder into the jar.
4. Then pour a little bit of vinegar into it.

Next, look at the transformation - White powder baking powder will hiss, forming foam, and the candle will go out. This interaction of two substances provides the formation of carbon dioxide. It sinks to the bottom of the jar because it is heavy compared to other atmospheric gases.

The fire does not get access to oxygen and goes out. It is this principle that is laid down in the device of a fire extinguisher. They all contain carbon dioxide, which extinguishes the flames of the fire.

What else you need to read:

Oranges can float on water

If an orange is placed in a bowl of water, it will not sink. Clean it and dip it in water again - you will see it at the bottom. How did it happen?

The peel of an orange has air bubbles on which it floats on the water, almost like on an air mattress.

Checking the ability of eggs to float on water

We use water cans again. Put a couple of tablespoons of salt in one of them and stir until dissolved. Dip an egg in each of the jars. In salt water, it will be on the surface, and in normal water, it will sink to the bottom.