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Give reasons why copper is used to make hot water tanks and not steel (an alloy of iron).
Assertion: Metals are good conductors of heat. Reason (R): Silver and Copper are poor conductors of heat.
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What do you came to know about metals in this experiment?
What do you mean by thermal conductivity? Give some examples of thermal conductors.
Aluminium metal does not melt in the given experiment. Give reason and give two uses of aluminium.
The following activity is set up in the science laboratory: A copper wire is clamped to a stand and fixed with a pin at the free end of the wire using wax. The wire is heated from the clamped end using a burner. After some time, the pin falls off.
