Final answer:
Density is a physical property that does not involve a change in the state of a substance, unlike melting and boiling points.
Explanation:
Density is not necessarily related to a change of state of a substance. It is a physical property that is characteristic of matter but does not involve a change in chemical composition. On the other hand, melting point and boiling point are related to the change of state of a substance as they indicate the temperature at which a substance transitions between solid, liquid, and gas states.
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