3. Describe the expansion of gases on
heating with the help of an activity.
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The air in the flask expands and moves out of the flask through the tube into the beaker containing water. ... Now allow the beaker to cool. As the air inside the flask contracts, the water rises up the tube. This proves that gas like air expands on heating and contracts on cooling
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ucjfgjfufkddidjfkfkgmvkgkgogofifdiffkif evaporation
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