Mad Science

                                            Plastic Milk

What You will Need

One cup of milk

4 teaspoons of white vinegar

A bowl

A strainer

Adult help

What To Do

1. Ask your friendly adult to heat up the milk until it is hot, but not boiling
2. Now ask the adult to carefully pour the milk into the bowl
3. Add the vinegar to the milk and stir it up with a spoon for about a minute
4. Now the fun part, pour the milk through the strainer into the sink - careful it may be hot!
5. Left behind in the strainer is a mass of lumpy blobs.
6. When it is cool enough, you can rinse the blobs off in water while you press them together .
7. Now just mold it into a shape and it will harden in a few days. - Cool!

                           Bend A Bone With Vinegar

What You will Need

A jar large enough to fit a chicken bone

A chicken bone - a leg or "drumstick" bone works best

Vinegar

What To Do

1. Have a nice chicken dinner and save a bone. Leg bones work best.
2. Rinse off the bone in running water to remove any meat from the bone.

3. Notice how hard the bone is - gently try bending it. Like our bones, chicken bones have a mineral called calcium in them to make them hard.

4.Put the bone into the jar and cover the bone with vinegar. It might be a good idea to put the lid on the jar or cover it - let it sit for 3 days

5. After 3 days remove the bone. It should feel different. Now can rinse it off and try bending it again. Is it really a rubber bone?