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How can I change the properties of slime?



Experiment- Making custard balls

You will need: 

  • Custard powder or cornflour
  • Water 
  • A bowl



  1. Add 4 heaped tablespoons of custard powder to a bowl
  2. Add a few tablespoons of water to make a thick paste
  3. Play around with it and manipulate the material (technical term a colloid)

Next steps: 

Does this work with other materials like sugar, salt or regular flour? Can you roll it into a ball? Can you stand on it? What happens when you punch it? Can you investigate any other properties? Do you know any other materials like this?


If you have finished all of that and you enjoyed these experiments, then check out this website for even more fun ideas to do at home: