Try out this science experiment... a classy chemical demonstration. Watch this video tutorial to learn how to make a foamy elephant toothpaste chemical reaction. There's a reason why they call this elephants toothpaste.
Hydrogen peroxide is decomposed to form oxygen gas and water. When potassium iodide is added as a catalyst, the oxygen forms bubbles and creates a large volume of foam. This is an easy science experiment you can do right at home.
Ingredients: 35% hydrogen peroxide, dish soap, food coloring, and potassium iodide catalyst.
2H2O2 --> O2 + 2H2O