Silly Science with Simon: How to make oobleck that dances and glows in the dark

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July 26, 2021

SILLY SCIENCE WITH SIMON: Have you heard of Oobleck? It’s a type of slime made from cornflour and water. It’s not quite a solid and not quite a liquid… so what is it?! Silly scientist Simon shows us how to make dancing, glow in the dark slime.

Have you heard of Oobleck? It’s a type of slime made from cornflour and water. It’s not quite a solid and not quite a liquid… so what is it?!

Oobleck is a non-Newtonian fluid. It acts like a solid when you apply pressure to it, and acts like a liquid when you take that pressure away!

SILLY SCIENCE WITH SIMON

You can make Oobleck at home by mixing the following in a bowl:

2 cups of cornflour
3/4 cup of water (add up to 1/4 cup of extra water, until it flows when you tip the bowl)
20 drops of food colouring!

Once you’ve made it, roll up your sleeves and test it out! Try hitting the Oobleck with your hands – does it feel like a solid? Try gently lowering your hands into it – does it feel like a liquid? How cool is this stuff?!