Physics and chemistry are fascinating sciences! See for yourself - experiment with your children. They will love it!
Instructions
Step 1
Transparent egg
Put the egg in a glass of vinegar and leave for about a day. During this time, a white layer forms on the surface of the vinegar - destroyed calcium from the shell. The bubbles that can be observed during the process are carbon dioxide removed.
Using a spoon, carefully take out the egg so that it does not collapse. There may be shell particles that need to be wiped off. Now the egg is a bit like rubber.
Let's start experimenting. For example, how much load a transparent egg can withstand. Or put it in a bowl of water - the egg will begin to swell and "grow".
Attention: do not eat the egg!
Step 2
Elephant foam
We put the plastic bottle on a pallet with sides. In a separate container, mix 2 tablespoons of warm water with a teaspoon of yeast. Yeast will speed up the chemical reaction. Pour half a cup of 6% (or higher) hydrogen peroxide into the bottle. Add 5 drops of food coloring and a drop of dish soap. Add yeast mixture to the bottle and see what happens!
The resulting foam is absolutely safe and the child can touch it with his hands (if he is not prone to allergies). The foam contains only water, oxygen and a soap solution.
Step 3
Hovercraft
We take an old CD. Using superglue, we glue a dispenser lid to it from water or detergent (only a round valve is suitable according to the principle of a valve that closes by pressing). When the glue is dry, inflate the balloon and close the valve.
Place the CD on a hard, smooth surface (no carpet!), And pull out the valve. The inflatable cushion boat will make noise above the ground as the air escapes through the valve.
Step 4
Jellyfish in a bottle
Take a transparent plastic bag and cut a rectangle from it. Fold it in half and tie it with a thread to make a small balloon with air - you get the "head of a jellyfish". Cut the rest with strips (about 8 to 10 "tentacles").
Step 5
We fill a plastic bottle with water, but not completely, so that air remains and the "jellyfish" can move in the bottle. Better to use a blue plastic bottle.
Small children will be delighted with such a floating jellyfish. Plus, it's a good hand workout as the bottle will have to be turned over constantly. With older children, you can talk about why the jellyfish always hovers above, and what distinguishes it from a living jellyfish.
