This is a highly visual demonstration that illustrates both the effects of density and chemical reactions. Like a density column, volcano eruption, and Alka-seltzer reaction all in one, learners will observe layering between immiscible liquids, a volcanic eruption from salt crystals and a lava-lamp bubble effect caused by Alka-seltzer. This instruction guide includes a helpful video illustrating each step of the demonstration as well as an explanation of how the substances in the glass are interacting with each other. Note: this activity calls for beer, but any other light-colored fizzy drink will work as well.


  • Education > General
  • Mathematics > General

Education Levels:

  • Grade 1
  • Grade 2
  • Grade 3
  • Grade 4
  • Grade 5
  • Grade 6
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  • Grade 8
  • Grade 9
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  • Grade 11
  • Grade 12


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