Explain Thermal Expansion!
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Explanation:
Thermal expansion is the tendency of matter to change in shape, volume, and area in response to a change in temperature. Temperature is a monotonic function of the average molecular kinetic energy of a substance. ... The kinetic energy of the molecules of a substance increases when the substance is heated.
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most of the solids liquids and gases are known to expand on heating. This phenomenon is called thermal expansion.
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