Question

explain thermal expansion of liquids on the basis of molecular motion.

Answer 1

Explanation:

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Answer 2

Answer:

Thermal expansion occurs when an object expands and becomes larger due to a change in the object's temperature.

When a substance is heated the average kinetic energy of molecules increases and they start moving with an increased speed.As a result between mean separation between the molecules also increases. thus there is a increase in the length area and volume of the substance.

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