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Little Scientists: Mentos Geyser

May 11, 2020

What happens when you mix Mentos (the fresh maker) and soda? A geyser! Needless to say, the messy level of this science experiment is a big FIVE.

Messy level: 5
(5 = Super messy. 1 = Not messy at all.)


  • Mentos candy
  • 2-liter of soda (diet works best)

WARNINGS: Not to be done without adult supervision. Do not place face near bottle when conducting experiment.


1. Place the soda in an empty or tarp covered area outside.

2. Quickly dump 4-6 Mentos into bottle.

3. Run and watch!

But why?

Why do soda and Mentos create such exciting geysers? Click here for the explanation.

– from the creative mind of Miss Heather

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