Elephant’s Toothpaste


  1. Empty plastic bottle or tall beaker
  2. Dry Yeast
  3. Warm Water
  4. Dish Soap
  5. 3% Hydrogen Peroxide
  6. Measuring Cups
  7. Measuring spoons
  8. Safety Glasses
  9. Tub or tray to catch foam
  10. Location that can handle spills and food coloring (outside or tiled floor, no carpet)
  11. Liquid food coloring

Students will create a large foaming reaction as the hydrogen peroxide is broken down by the yeast to become oxygen and water. 

Article: https://www.scientificamerican.com/article/make-elephant-toothpaste/

Video: https://www.youtube.com/watch?v=I3-hGx6PEMM