Question

Why always expansion occurs on increasing temperature in materials due to potential energy?

Answer 1

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ȯ Liquids and solids expand with increasing temperature, because the kinetic energy of a body's atoms and molecules increases. Explain why some materials shrink with increasing temperature.

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Answer 2

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• When heat is added to a substance, the molecules and atoms vibrate faster.
• As atoms vibrate faster, the space between atoms increases.
• The motion and spacing of the particles determines the state of matter of the substance.

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