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Elephant Toothpaste | Education | WMHT

Elephant Toothpaste

Posted by WMHT Web Editor at

Directions for Elephant Toothpaste – Adult supervision required

            Plastic cup  - Yeast mix
            1 teaspoon powdered Active Yeast 
            2 tablespoons hot water
            stir carefully, let sit

            Plastic bottle – 16 oz, washed
            set bottle in pan – 9X9”, 2” deep
            pour in ½  cup hydrogen peroxide [Salon Care professional 20 volume]
            4-5 drops food coloring
            1 tablespoon Dawn – Simply Clean [not anti-bacterial, non-concentrated, original scent]
Use clean funnel for pouring Yeast mix into your plastic bottle. Do not use a funnel that was first used to pour the hydrogen peroxide into the bottle.

Carefully & Quickly  pour yeast mix thru funnel into plastic bottle.  Quickly remove the funnel…  What is happening?
You mixed soap & hydrogen peroxide [mild acid] - which traps the oxygen, creating bubbles.  You added yeast to increase the speed of the break down into oxygen and water.  Hydrogen peroxide generates a large volume of oxygen, the oxygen quickly pushes out of the container.  The soapy water traps the oxygen, creating bubbles, and turns into foam. 
Touch the bottle and foam to feel any changes taking place.  The foam is just soap & water with oxygen bubbles. The bottle will feel warm to the touch as this is an exothermic reaction.

Elephant Toothpaste

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