Question

A student heats a piece of solid metal. The metal remains solid. Why does it get bigger?

Answer 1

Answer:

There you have it. Higher temperatures mean higher energy levels. At higher energy levels, the average atom separation is also larger. When you increase the temperature for most objects, they expand.

Answer 2

Answer:

Higher temperatures mean higher energy levels. At higher energy levels, the average atom separation is also larger. When you increase the temperature for most objects, they expand.

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