Bear and I love doing science experiments at home. One, it’s hands-on and it’s super fun (okay, that’s two), but also, a lot of the ingredients and materials we use are SUPER CHEAP.
That being said, let me introduce you to the Elephant Toothpaste Experiment.
Here are the instructions courtesy of ScienceBob:
- A clean 16 ounce (473 ml) plastic soda bottle or a water bottle.
- 20-Volume hydrogen peroxide liquid (20-volume is a 6% solution which is stronger than what you find in most pharmacies. It is typically used for lightening hair and is found at many beauty supply stores. You can use the 3% hydrogen peroxide found in pharmacies, but the reaction will be a bit smaller)
- 1 Tablespoon (15ml – one packet) of dry yeast
- 3+ Tablespoons (15 ml) of warm water
- Liquid dish washing soap
- Food coloring
- Small cup
- Funnel
- Safety goggles
- Adult help
NOTE: The foam could overflow from the bottle, so be sure to do this experiment on a washable surface, or place the bottle on a tray.
CAUTION: The unreacted hydrogen peroxide can irritate skin and eyes. Read the safety information on the hydrogen peroxide bottle and be sure to wear safety goggles.
- Use a funnel to carefully pour 1/2 cup (118 ml) of the hydrogen peroxide liquid into the bottle
- Add about 10 drops of your favorite food coloring into the bottle.
- Add about 1 tablespoon (15ml) of liquid dish soap into the bottle and swish the bottle around a bit to mix it.
- In a separate small cup, combine the warm water and the yeast together and mix for about 30 seconds. It should be about the consistency of melted ice cream – add a bit more warm water if needed.
- Now the adventure starts! Use the funnel to pour the yeast-water mixture into the bottle and watch the foaminess begin!
And of course, we have a video!
Have you tried the elephant toothpaste experiment?