Try This Activity
(Procedure from page 12)

Did you know that an egg can bounce?
What a minute... don't use a raw or cooked egg! Instead make your bouncing egg by following this procedure.

Introduction
Eggs have a variety of unique characteristics and can be used for a variety of scientific experiments.

Materials
One hard-cooked egg per team, white vinegar, plastic container with lid.

Procedure
1. Without breaking the shell, examine the hard-cooked egg carefully. Record visual observations.

2. Place egg in plastic container. Cover completely with white vinegar and seal with lid. Predict what will happen in one hour, one day, one week. Record predictions.

3. Observe the egg at the indicated times and record observations. The egg shell should have dissolved and the egg white and yolk should have become rubbery. After rinsing and drying the egg, record what happens when it is dropped. It should bounce.

Note
After each observation, wash your hands. Do not eat the eggs.

Download procedure and observation sheet
Observation Sheet (PDF, 36 KB)