Great science-fun for kids too!
Step 1: Materials Needed
This bouncy ball is made using a reaction between the two following chemicals:
- 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!
Start by measuring 4 tsp. of water glass into one beaker, and 1 tsp. of alcohol into the other.
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!
Scrape out the polymer, and form it with your hands. You should wear gloves, because water glass may be irritating to the skin.
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!
Now the only thing left to do is use it!
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.