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No, it does not harden! It is always playable, even if you forget it on your desktop. The only way to harden silly putty would be to expose it to extremely cold temperatures. For example, Silly Putty hardens when put into liquid Nitrogen. It will harden the putty, but it will regain its texture as soon as it warms up.
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∙ 10y ago
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Is silly putty poisonous?
No, Silly Putty is non-toxic.
Who uses silly putty?
Silly putty is used by children who 'play' with it
Where did silly putty come from?
silly putty is in Ralphs at the toys area.
Is silly putty a fluid?
no,silly putty is not a fluid it's a solid.
What was the importance of discovering silly putty?
Putty was invented to Secure the Networks.
What is silly putty?
A mixture of borax, glue, and water to make a thickened solution called silly putty...
How does silly putty work?
silly putty can stretch,bounce,and brake if you stretch it fast.
How do you gat silly putty off of silly bands?
Here's how you get silly putty off silly bands: Leave the silly band with the silly putty out to dry and then scrape off the silly putty. If it doesn't work, you might want to try wetting it then while it's gooey and slippery, scrape it off just the same!
How does the silly putty work?
Because silly putty is silly! And you are now silly for asking this question.
What is in silly putty?
Silly putty is made of glue, water, and borax.not too much of anything
What was the original name for silly putty?
plastic putty
Is silly putty older than the slinky?
Silly putty was created by accident in 1945, and the slinky was invented in 1943; silly putty wouldn't be played with until after 1943 though.
