Explosive FOAMY FOUNTAIN FUN Simple Science Experiment

Fun Simple Science Experiment: Explosive Foamy Fountain. Do you want to make an awesome mess? No, really this simple fun science experiment is an awesome messy experiment. You will defiantly need your parents’ permission.

Fun Simple Science Experiment

What you will need for this fun science experiment to work.

  • A clean 16 ounce plastic soda bottle.
  • 1/2 cup 20-volume hydrogen peroxide liquid. (20-volume is a 6% solution, ask an adult to get this from a beauty supply store or hair salon)
  • 1 Tablespoon (one packet) of dry yeast.
  • 3 Tablespoons of warm water.
  • Liquid dishwashing soap.
  • Food coloring (your choice of color).
  • A small cup
  • Safety goggles – yes you will need them.

This is very important to remember: The foam will overflow from the bottle, so be sure to do this experiment on a washable surface, or place the bottle on a tray. Like we said – it’s going to be a big mess.

How and What to do

We want to remind you again to get permission and have adult supervision for this foamy fountain fun science experiment. Hydrogen peroxide can irritate skin and eyes, not good at all. So put on those safety goggles and ask an adult to carefully pour the hydrogen peroxide into the bottle.

  • Add 8 drops of your favorite food coloring into the bottle.
  • Add about 1 tablespoon of liquid dish soap into the bottle and swish the bottle around a bit to mix it.
  • In a separate small cup, combine the warm water and the yeast together and mix for about 30 seconds.
  • Now the adventure starts!
  • You then pour the yeast water mixture into the bottle. A funnel will help with this and then all you have to do is watch the foaminess begin!

How does it work?

Tell me this fun simple science experiment isn’t awesome! The foam you created in this fun messy experiment is special. Because each tiny foam bubble is filled with oxygen. The yeast acted as a catalyst. That basically means it was a helper to remove the oxygen from the hydrogen peroxide.

Since it did this very fast, it created lots and lots of bubbles. You will notice that the bottle got warm. Your experiment created a reaction called an Exothermic Reaction. That means it not only created foam, it created heat!

The foam produced is just water, soap, and oxygen. Therefore, you can clean it up with a sponge and pour any extra liquid left in the bottle down the drain. This experiment is sometimes called “Elephant’s Toothpaste” because it looks like toothpaste coming out of a tube, but don’t get the foam in your mouth! That would not be good at all. Yuk!

Check out this cool foam experiment at YouTube.


Happy, crazy loving father of two who believes the world is a bit off kilter. I spend a lot of time trying to teach my children to be better than me - I hope they appreciate it.

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