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Description

Make some magic slime that doesn't know whether its a solid or a liquid!

Resources

Cornflour
Water
Mixing Bowl

Instructions

Pour the cornflour into the bowl.
Add water, a small amount at a time. (A 500g box of cornflour will need around 300ml of water)
Mix with your hands.
When you have a the right amount of water, the slime should run through your fingers like a liquid but form a solid ball when you squeeze it together.

Extra: Cover a bass speaker in cling film and pour a small amount of the slime onto it. Put on some heavy bass music and watch the slime dance to the beats!

How does it work?
The cornflour particles are surrounded by water molecules when you mix them, so the water behaves like a lubricant and lets the cornflour particles slide over one another, so it flows like a liquid. When you apply a force to the slime, the water is squeezed out and the cornflour particles are squashed together, so the it behaves like a solid. When you stop squeezing, it relaxes and the water flows between the particles again.

Tags

• science badge
• science experiment

Badge Links

• Scientist - Experiment