4. Water is a bad conductor of heat but it becomes hot when kept over a flame. Name the phenomenon that takes place in this case. Explain it with the help of an experiment.
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THOUGH WATER IS A BAD CONDUCTOR OF HEAT, IT BECOMES HOT WHEN KEPT IN A FLAME.. THE PHENOMENON THAT TAKES PLACE IS CALLED BOILING... WHEN THE TESTUBE WITH WATER IN IT IS PUT TO THE LIT BURNER.. The LIQUID GAINS KINETIC ENERGY WHICH OVERCOMES THE FORCE OF ATTRACTION BETWEEN THE MOLECULES..
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