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Sudsy Slime activity - Fizzics Education

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Sudsy Slime

Follow FizzicsEd 150 Science Experiments:

You Will Need:

  • 1.5 cups of hot water.
  • Food colouring (Optional)
  • 1 cup of soap flakes
  • Electric beater or whisk
  • Mixing bowl
  • Safety goggles to avoid getting soap your eye

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Sudsy Slime Science Experiment - setup_materials
1 Sudsy Slime Science Experiment - mixing hot water and food colouring

Pour the water and food colouring into the bowl and mix.

Add the soap flakes and mix with an electric beater on high until a thick foam is produced. This usually takes about five to ten minutes. Be careful, this foam expands exponentially.

2 Sudsy Slime Science Experiment - mixing soap flakes and hot water

Play with the soapy slime right away.

3

The more you whip the foam, the more puffed up the slime becomes!

Now let it setter for a few hours, its texture will change.

4 A man watching bubbles pour out of a large measuring cylinder

Get the Unit of Work on States of Matter here!

  • What are the different states of matter?
  • How does heat affect the size of materials?
  • How does liquid nitrogen affect materials and much more!

Includes cross-curricular teaching ideas, student quizzes, a sample marking rubric, scope & sequences & more

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5 a lady with a black shirt pouring liquid nitrogen into a bowl
6 Teacher showing how to do an experiment outside to a group of kids.

Online courses for teachers & parents

– Help students learn how science really works

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How does soap turn into slime?

Whipping the hot soapy solution creates a foam, which is a colloidal dispersion of a gas in a liquid. The gas in this case is air and the liquid is the soapy solution. The resulting soapy foam is so dense it feels slimy to the touch! A small amount can easily fill a large tub, which makes it an inexpensive way to make mountains of it for the kids to play!

Get more slime recipes here!

Variables to test

More on variables here

  • Try different soap types.
  • What happens if you use detergent instead?
  • Vary the temperature of the water.
  • Does slow or fast mixing make a difference?

A man with a glove above a liquid nitrogen vapour cloud

Learn more!

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