Question

why does matter expand when heating?​

Answer 1

$\huge \mathbf{Answer:-}$

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. Solids, liquids and gases allexpand when heat is added.

Answer 2

Answer:

simply put matter expand when heated because this is a race in kinetic energy of the duel individual science the molecules are moving around a lot more when heating the distance between them increase because they bounce off of each other and push other molecules farther away

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