1Fill up the jar with vinegar, enough to submerge the egg.
2Place the egg in the jar.
3You will see bubbles starting to form.
4Leave the egg in the jar overnight.
5Take out the egg and carefully clean it off.
5After wiping it dry, you can squeeze it, shine a light through it or carefully bounce it.
How It Works
Normally, eggs aren’t soft or bouncy. The shells are made of a chemical called calcium carbonate. When you let the egg sit in the jar of vinegar overnight, the acetic acid in the vinegar reacts with the calcium carbonate in the shell. This causes the atoms to regroup and form a new substance of water, carbon dioxide, and calcium acetate. These new molecules are not white and hard like the calcium carbonate shell. These molecules have different properties and the egg without its shell becomes soft and bouncy.
Check out the Full Lesson on Chemical Reactions!
In this lesson, we learn that:
When substances undergo chemical reactions their properties change.
The total number of atoms does not change throughout a chemical reaction.
Scientists use chemical reactions to create new materials and medicines.