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 "chemistry tricks" at a children's party will significantly increase the degree of fun.
Fireproof bill
For an incredibly effective, but simple trick, you will need:
- banknote;
- water-alcohol solution with about 50% alcohol content;
- s alt;
- tweezers or tweezers.
A pinch of s alt 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, it 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 soaked the paper does not have time to evaporate.
Crystal eggs
Growing crystals is one of the popular hobbies that entertaining chemistry offers. Experiments with crystallization are most often carried out on sugar, but sugar crystals are no longer surprising. We offer a new and unusual spectacle - crystals grown on eggs!
Crystal eggs can be obtained with:
- alum (sold at the pharmacy);
- PVA glue;
- dyes.
Crystals on 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 a few 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. The longer the egg lies in the solution, the larger the crystals grow. It is worth taking out ready-made crystal eggs carefully - they are quite fragile.
A balloon on a bottle
How can you inflate a balloon without helium without exerting physical effort? To do this, you can use ordinary baking soda and vinegar, which are in the closet in the kitchen of every mother. To conduct this chemistry experiment, you will need:
- balloon;
- bottle;
- 3-4 teaspoons of baking soda;
- table vinegar.
Sodafall asleep directly into the ball with a funnel or spoon. After that, it is put on a bottle with a small amount of 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!
Colorful layers in a bottle
The following chemistry experiment will clearly explain to the child the concept of liquid density. Useful for this:
- a quarter cup of sunflower oil;
- a quarter cup of water tinted any bright color;
- a quarter cup of sugar syrup (for a spectacular focus, you should also add dye to it).
The child can predict in advance what will happen when mixing all these liquids. He will like the result - the syrup will settle down as the most dense, 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, by adding different amounts of sugar to 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 just have fun on a rainy day.
