Do you leave the shell on egg before put vinegar it to make a bouncy egg?

You do not leave the shell on the egg before putting it in vinegar to make a bouncy egg.

The vinegar dissolves the calcium carbonate in the eggshell, which is what makes it hard. If you leave the shell on, the vinegar will only dissolve the outer layer and the egg won't become bouncy.

Here's how to make a bouncy egg:

1. Get a raw egg and a jar.

2. Pour vinegar into the jar until it covers the egg.

3. Carefully place the egg in the jar.

4. Let the egg sit in the vinegar for 24-48 hours.

5. After the egg is done soaking, carefully remove it from the jar.

6. Rinse the egg with water to remove any remaining vinegar.

Now you have a bouncy egg! Be careful not to drop it too hard, as it can still break.