Rubbery Bones (Science Experiments)

Materials Required:
l Chicken wishbone
l Jar
l Vinegar

Procedure:

1. The next time you have chicken for dinner, save the wishbone.
2. Set the bone in a jar and pour vinegar into the container until the entire bone is covered.
3. Let the experiment sit undisturbed for a couple of days. Then take the bone out and bend it. It will feel rubbery, and you will be able to tie the ends in a knot.
   

This Is What Happens:
Bones contain a substance called calcium, which makes them hard and strong. The vinegar dissolved away most of the calcium in the wishbone. The remaining material is flexible.