Great science-fun for kids too!
Step 1: Materials needed
- Alcohol (Ethanol) - You should be able to get this at any supermarket.
- Water glass (Sodium silicate) - Pretty easy to find at ceramic supply stores drug stores and hardware stores. I buy mine for about 3$ per 1/2 litre.
You will also need:
- Disposable rubber gloves
- 2 small beakers
- Popsicle stick
... and that's it! Now that wasn't so bad at all, was it?
Step 2: Mixing!
Then pour the alcohol into the beaker with water glass and start stirring immediately with the popsicle.
A white solid should start to appear in the mixture, and within a minute or two it should be all solid.
Step 3: Squeeze it!
Keep squeezing and be patient. Squeeze and shape it in a ball shape until the ball appears dry un the surface and doesn't crumble.
Step 4: Done!
Bounce it, juggle it etc.
The bouncy ball should be stored in a plastic bag, and if it breaks or gets distorted, just squeeze it back together into a ball shape.
And for a pink bouncy ball you can use phenolphthalein instead of alcohol. The only thing is, that it is not as easy available.