Electricity and Magnetism

Electric Slime

Enrichment Activity for 5-11 11-14

What you need

  • Cornflour
  • A tablespoon
  • A cup
  • Putty
  • Vegetable oil
  • Polystyrene or a balloon


  1. Mix two to three tablespoons of cornflour with vegetable oil in the cup to make a gloopy, slime-like thick cream
  2. Rub the polystyrene or balloon on your hair
  3. Make a stream with the slime by pouring it from the tablespoon back into the cup. Wave the polystyrene object or balloon near the slime stream. The slime should move towards the balloon and become much thicker

Results and Explanation

The slime is made of tiny particles of starch surrounded by oil. Rubbing the object makes it negatively charged and it attracts the positive ends of the starch particles so that these line up and clump together.

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