How does a cracked egg react to vinegar?

A cracked egg in vinegar will undergo a fascinating transformation! Here's what happens:

* The vinegar reacts with the calcium carbonate in the eggshell. Vinegar is acidic, and the calcium carbonate in the eggshell is a base. This reaction produces carbon dioxide gas, which you'll see as bubbles forming on the shell.

* The shell gradually dissolves. As the reaction continues, the vinegar dissolves the calcium carbonate in the eggshell, weakening it. The shell will become thinner and eventually almost completely disappear.

* The egg white becomes firmer. The vinegar will cause the egg white proteins to denature and solidify, making the white more rubbery and less runny.

* The yolk will shrink. The vinegar will draw water out of the yolk, causing it to shrink and become more concentrated.

The result: After a few days submerged in vinegar, you'll have a rubbery egg with a very thin, almost transparent shell. The egg white will be firm and the yolk will be smaller and more dense.

Here are some additional points to consider:

* The type of vinegar used doesn't affect the outcome significantly. Any kind of vinegar will work, but white vinegar is generally preferred because it doesn't have a strong color that could stain the egg.

* The time it takes for the shell to dissolve depends on the strength of the vinegar and the temperature. Generally, it takes a few days for the shell to dissolve completely.

* You can use this process to make a bouncy egg. Once the shell is dissolved, you can carefully peel off the membrane, leaving you with a rubbery, bouncy egg that can be played with!

Let me know if you have any other questions!