Question

what is thermal expansion??

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Answer 1

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Explanation:

Thermal expansion is the tendency of matter to change its shape, area, volume, and density in response to a change in temperature, usually not including phase transitions. Temperature is a monotonic function of the average molecular kinetic energy of a substance.

Answer 2

Thermal expansion :-

➡️Thermal expansion means expansion on being heated.

The thermal expansion of a solid is very small, that of a liquid is larger and that of a gas is the largest. On being heated, the molecules absorb energy and move farther apart. The smaller the intermolecular force, the farther the molecules move and the larger is the expansion

Thermal expansion is the tendency of matter to change in shape, area, and volume in response to a change in temperature. Temperature is a monotonic function of the average molecular kinetic energy of a substance. When a substance is heated, the kinetic energy of its molecules increases.