Elephant Toothpaste

Sometimes you just have to go big to get the kids attention, and this fun experiment will do the trick! 

Everyone needs clean teeth, right? What do you think it would look like if elephants used toothpaste? In this fun chemistry experiment, you’ll create a chemical reaction that grows right before your very eyes… into something that looks like Elephant Toothpaste!  Don’t forget: Always wear eye protection while doing chemistry experiments.

Materials Needed: 
  • Empty plastic bottle
  • Dry yeast,  1 Tablespoon
  • Warm water, 3 Tablespoons
  • Liquid dish soap
  • 3% hydrogen peroxide (this is a special version of hydrogen peroxide)
  • Measuring cups 
  • Measuring spoons
  • Safety glasses
  • Outdoor Location 
  • Liquid food coloring (optional)

Step 1: Measure 1/2 cup of hydrogen peroxide, and carefully pour it into the bottle.

Step 2: Add a big squirt of dish soap into the bottle, and swirl gently to mix.

Step 3 (optional): If you want to make your foam a color, add a few drops of food coloring directly into the hydrogen peroxide, and swirl the bottle gently to mix. 

Step 4: In a measuring cup mix together one tablespoon of yeast and three tablespoons of warm water. Stir for about 30 seconds. 

Step 5: Pour the yeast mixture into the bottle then quickly step back, and watch for the chemical reaction to push the “elephant toothpaste” out of the bottle!

Did you know you’re doing chemistry?!

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