We have a lot of things stored in the kitchen, with which you can put interesting experiments for children. And for yourself to make a couple of discoveries and wonder why you never noticed this before?
One of the most interesting experiments you can do at home is elastic eggs! You have no idea how that's possible? It's easy! This experiment is a classic example of an acid base reaction. This reaction dissolves the shell, but leaves the inner membrane intact, creating a bare egg.
Put the egg in a glass jar. Add vinegar. Pour enough vinegar to cover the egg, and a little more. First the eggs swim, but then they sink.
Watch the bubbles! Within a minute of adding vinegar, tiny bubbles of carbon dioxide appear on the eggshell. This is one part of the chemical reaction that takes place inside the jar.
Close the lid and leave for a few days, and can be a week. The egg will get a little bigger. The brown color of the eggshell pales. A layer of scale appears on the surface of the vinegar. You can replace the vinegar in a couple of days.
After a week, carefully remove the egg from the vinegar. Wash and wipe gently. You will see that the eggshell has become soft, it is pliable even with a light touch. It's like a naked egg!
Naked eggs are really cool. The inner membrane remains intact, so the eggs are quite fragile. They can be squeezed gently. The eggs are translucent, so you can see the yolk, which, interestingly, always floats up.
If you drop a bare egg from a very low height (about 2-3 cm), it is likely to bounce like a rubber ball. (Be careful, it gets dirty and can burst!).
00:45 Luminous elastic egg
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