What IS a polymer?
A polymer is a natural or synthetic compound with
repeating small molecules.

What's so special about it?
This polymer acts as both a solid & a liquid.

Mix two simple ingredients together to make hours of
messy slimy fun.

In a large plastic bowl:
half a box of cornstarch
water - add little by little until a nice consistency

We stirred with our hands.
How will you know when to stop adding water?
When you run your hand through it slowly it should act as
a thick liquid.  When you tap the surface quickly, it should
act as a rubbery solid.  See video.

This is MESSY.  I recommend doing this outside where
any mess can be cleaned with a hose.
"Why was the broom late?
Because it overswept."
Move your hands through it slowly, it acts as a thick liquid.
Polymer Fun
Tapped, it acts as a solid.
We made this
on a hot
summer day.  
When it dries
out, it can be
revived (even a
day later) by
adding water,
little by little.
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