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
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.
Play with the soapy slime right away.
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.
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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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!
Variables to test
- 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?
From colour changes to slimy science, we’ve got your kitchen chemistry covered!
Get in touch with FizzicsEd to find out how we can work with your class.
Chemistry Show
Years 3 to 6
Maximum 60 students
Science Show (NSW & VIC)
60 minutes
Online Class Available
STEM Full Day Accelerator - Primary
Designed from real classroom experiences, this modular day helps you create consistently effective science learning that directly address the new curriculum with easily accessible and cost-effective materials.
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