Since it did this very fast, it created lots and lots of bubbles. The yeast acted as a catalyst (a helper) to remove the oxygen from the hydrogen peroxide. Now the adventure starts! Pour the yeast water mixture into the bottle (a funnel helps here) and watch the foaminess begin!įoam is awesome! The foam is special because each tiny foam bubble is filled with oxygen. In a separate small cup, combine the warm water and the yeast together and mix for about 30 seconds.ĥ. Add about 1 tablespoon of liquid dish soap into the bottle and swish the bottle around a bit to mix it.Ĥ. Add 8 drops of your favorite food coloring into the bottle.ģ. Hydrogen peroxide can irritate skin and eyes, so put on those safety goggles! An adult should carefully pour the hydrogen peroxide into the bottle.Ģ. Note: Since foam will overflow, be sure to do this experiment on a washable surface, or place the bottle on a tray.ġ. 1/2 cup 20-volume hydrogen peroxide liquid (20-volume is a 6% solution you can get this from a beauty supply store or hair salon).The foam your kids will create in this at-home science experiment resembles toothpaste being squeezed from a tube - just be sure they don't get it in their mouth!
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