Color Changing Slime

  1. Grades 6-8
  2. Grades 9-12


Explore the science of thermochromism — with squishy slime that shifts color when it changes temperature! Mix and knead two batches of colorful slime, then draw on them with an ice-water-dipped stylus to see their color-change powers in action. Ready to have a slime of a time?

From the desk of the product designer:

Behind the design

Getting the colors to change at exactly the right temperature was tricky. It took a lot of sampling and testing to figure out the balance, but now we know a ton about thermochromic materials in general.

- KiwiCo Product Designer

By the numbers


Slimes made during development


Ice cubes melted into slime


Color changes during testing

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