Question

explain why a balloon inflates, when it is placed over an empty metallic bottle and heat is supplied to the bottle for a few minutes.

Answer 1

Answer:

when the air in the bottle is placed close to hot water (either by adding the water to the bottle, or by submerging it in a bowl), the air absorbs some of the heat from the water. Heat is a measurement of the motion of molecules. The hotter the temperature, the more quickly the molecules move around inside the air.

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