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Earth and Space     Materials from Earth

Teacher Demonstration Activity



bottle of limewater, straw, paper towel


  • Note that the limewater in the bottle is clear.

  • Place the straw into the bottle.

  • Cover the opening with the paper towel to prevent back splash of lime water.

  • Blow a gentle stream of air into the bottle.

  • Observe the changes in the bottle of limewater.


What has caused the changes in the limewater?

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