How to make a raw egg bounce?

How can you make a raw egg bounce? Is it possible? Read on to find out...

Materials:

• 1 raw egg
• 1 bottle of white vinegar
• 1 container / bowl
• water

Steps:
1. Place an egg into a container / bowl.

2. Pour white vinegar into the container until the eggs are completely submerged. Observe what happens.

3. Change the vinegar on the second day and subsequent days for a week.

4. Pour the vinegar away and rinse the egg with water.

5. Observe what happens to the egg.

6. Bounce the egg.

Note: You can place the egg in vinegar for about 48 hours and the egg will still be able to bounce.

Video:

Watch a video on the experiment.

Teacher Serena's Explanations:

When vinegar is poured into the container, bubbles are seen forming on the shell. The bubbles contain carbon dioxide. Why? Vinegar is an acid while egg shells are made up of calcium carbonate. The vinegar reacts with the calcium carbonate by breaking the chemical into the simplest parts, the calcium part and the carbonate part. The calcium part floats around in the solution while the carbonate part reacts to form carbon dioxide bubbles on the shell.

Some of the vinegar will pass through the membrane of the egg, causing the egg to become slightly bigger. This process is known as osmosis. Osmosis is the flow of a liquid from one solution through a semi-permeable membrane into another less concentrated solution.

~ Serena's Greenhouse