Picture of Make a Super Bouncy Ball
Welcome to my instructable, where I will tell you how to make a great little toy using a chemical reaction, and easy-to-get chemicals.
Great science-fun for kids too!

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Step 1: Materials needed

Picture of 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!

Picture of 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!

Picture of 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!

Picture of 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.
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i used liquid glass with metallic in it. . . . havent tried it yet. . . .will post my results in a few minutes. . .nice instructable!!!!
still waiting.....
still waiting too
Win Guy dombeef3 years ago
Uhhh... lol
dombeef Win Guy3 years ago
Yeah, any day now!
gario10 dombeef3 years ago
vman3 gario103 years ago
I have a small feeling he forgot...
mattman2 vman33 years ago
been waiting for a while now (author)  mattman23 years ago
I'm waiting eagerly as well!
I'm pretty sure it exploded on him. :-) Not all those who discover explosives live to tell of their creations ;-)
still waiting
AKA=THESNOWMAN has accidentally created a miniature black hole through his/her efforts and is now somewhere far in the future, being lectured about why not to mix liquid glass with "metallic" by non-humanoids in a language he/she cannot understand.

Greetings from the Future... XD

Whoah, 2 years ago was the last post! And I am still waiting as well

Maybe one day will get the answear...

Maybe, but considering they havent posted anything new since 2008, they are probably long past gone :(


I have been waiting now for six years. I really need to shave so I will be back to keep waiting in a few minutes ;)

maxthecat15 years ago
my bouncy ball breaks very easily. how can i get it so it doesn't break apart? and it also dries out quickly. I am using rubbing alcohol instead of ethanol. is that the problem?
well rubbing alcohol is mostly ethanol mixed with a little bit of water. so it should'nt be the problem...
Unless the water is evaporating out, causing the drying effect
I think rubbing alcohol is actually isopropyl alcohol rather than ethanol. Not sure what is going on here chemically so I can't really say whether it will make a difference but rubbing alcohol and ethanol are not normally the same thing.

Actually I was surprised that sometimes that both Isopropanol and Ethanol are sold as "Rubbing Alcohol..."

Jett Green1 year ago
What kind of alcohol are we talking here? Like the stuff you put on cuts, or like, Vodka stuff? Sorry if I'm being stupid.


Is this safe for kids to do? (author)  Chikpeas Brother1 year ago

Relatively speaking, yes. Just remember to wear safety glasses and gloves and keep an eye on them :).

Ok, Thanks!

By the way, where are you from in Denmark? (author)  Chikpeas Brother1 year ago
I'm from Copenhagen, why do you ask?

Cool! I lived in Copenhagen for 3 months back in 2009.

magey001 year ago
I really cannot find the place that I can buy a sodium silicate....I've called Hobby Lobby, Target, CVS pharmacy, Quick pharmacy, Lowe's, HEB, and the Home Depot and ask if they have "Sodium Silicate" or "Water Glass", but none of them have it.... Please help me
I work for a silicate plant. I'll try some different grades and ratios next week and report back what works best. My guess is that RR will work best, but we will see.

Here is a property data sheet for the grades we make:
Chemmagic3 years ago
I can't get my ball to form. It goes as far as the paste-like stage and then thats it.
I'm in a well stocked Chemistry lab with a new 2.5L container of sodium silicate, fresh Ethanol and phenolphthalein, I've also tried using isopropanol but nothing is working, i just have lots of beakers of goop.

Someone please please help!!! (author)  Chemmagic3 years ago
What concentration is the ethanol? It should be pretty close to 100%, typically 96% or so although many labs use 70% for the sake of sterilization, that might be why you are getting the 'paste' from excess water.
If you have enough chemicals to experiment, try using different ratios of silicate:ethanol that might work better.
it's absolute, Ive tried different ratios, Ive tried isopropanol, ive just had a go with methyl alcohol...still no luck :(
jpetty13 years ago
does it dry? If I add 4 cups to 1 cup will i get a bouncy ball?
jpetty13 years ago
Is in a 4:1 ratio?
I Love It.

What is your nationality? (author)  blinkyblinky3 years ago
I'm from Denmark.
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