Make Cornflour Slimeballs!

Some substances can't make up their mind if they are a liquid or a solid.
See what we mean when you try out this very messy experiment!

What you need
packet of cornflour, water, a wooden spoon, a bowl

What you do
step 1
Pour half the packet of cornflour into a bowl. Then gradually pour water over and
mix until it looks and feels like custard.
step 2
Run your fingers through the liquid.
step 3
Now try and punch the mixture with your fist.

What happens

When you run it through your fingers it acts like a liquid.When you
punch it, it becomes hard and behaves like a solid. (If it doesn't add more cornflour)

How and Why
The cornflour particles are suspended in the water, so it flows like a liquid.
When you apply force to it , the particles lock together, acting like a solid.
As soon as the force stops the slime goes back to being runny.

Now try to quickly make and throw a slimeball for a friend to catch
before it it turns runny! Have fun! Let us know how you get on!

Check out this link.