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Baking Soda & Vinegar Chemical Volcano


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Cause a Volcanic Eruption
Adding baking soda causes the volcano to erupt.

The volcano has been filled with water, vinegar, and a little detergent. Adding baking soda causes it to erupt.

Anne Helmenstine
You can make your volcano erupt over and over again.


  1. When you are ready for the eruption, pour some vinegar into the bottle (which contains hot water, dishwashing detergent, and baking soda).
  2. Make the volcano erupt again by adding more baking soda. Pour in more vinegar to trigger the reaction.
  3. By now, you probably see why I said to use a deep dish or a pan. You may need to pour off some of the 'lava' into the sink between eruptions.
  4. You can clean up any spills with warm soapy water. If you used food coloring, you could stain clothes, skin, or countertops, but the chemicals used and produced are generally non-toxic.

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