What happens if you put vinegar to an egg and if you put vinegar to a shell? Egg 1. Materials: hard-boiled eggs, white vinegar, cup and water.
2. Procedure: o
Soak eggs in white vinegar for 45-70 hours until all of the shell is dissolved.
o
Take the egg from the vinegar and soak it in water overnight.
o
Then lightly drop the egg on a table from two or three feet.
Do not drop the egg from a distance of more than a few feet or it will break. It bounces just a little. The egg does not break. It “bounces.�
3.Conclusion: The vinegar removes the shell but leaves the membrane or skin. The water stretches the membrane which is thick and can be shown. This allows the egg to “bounce.Eggs contain something called "calcium carbonate". This is what makes them hard. Vinegar is an acid known as acetic acid. When calcium carbonate (the egg) and acetic acid (the vinegar) combine, a chemical reaction takes place and carbon dioxide (a gas) is released. This is what the bubbles are made of. The chemical reaction keeps happening until all of the carbon in the egg is used up -- it takes about a day. When you take the egg out of the vinegar it's soft because all of the carbon floated out of the egg in those little bubbles.
Shell 1.Materials : shell, vinegar and a little cup.
2.Procedure: o Fill a cup with vinegar o Put the shell in the cup. o Take out the shell after one hour.
3.Conclusion: The shell has little holes. That is because the vinegar absorbed all it`s calcium.
Group Nยบ 04 (Naomi Torres/Irma Suarez)