How to Make a Yeast & Hydrogen Peroxide Volcano

Student showing a chemical volcano science demonstration

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Here's how to make a safe and easy chemical volcano using two common, inexpensive household ingredients.

What You Need

  • Quick-rising yeast
  • Hydrogen peroxide (brown bottle found in pharmacies and grocery stores)
  • Small bottle
  • Measuring cups (optional)
  • Paper or clay "cone'" (optional)

Here's How

  1. You pour the hydrogen peroxide into a small bottle. If you like, you can build a model volcano shape around the bottle using clay or a paper cone.
  2. When you are ready for the eruption, add a packet of quick rise yeast to the bottle.
  3. Stir in the yeast or swirl it around the container.
  4. Watch your "volcano" foam and fizz!

If you're seeking more exact measurements, try a half cup of hydrogen peroxide with 1/2 tablespoon of yeast.