When an object is "hot," what can you say about the motion of its atoms?

Temperature is a quantitative measure of “hot” or “cold.” When the atoms and molecules in an object are moving or vibrating quickly, they have a higher average kinetic energy (KE), and we say that the object is “hot.” When the atoms and molecules are moving slowly, they have lower KE, and we say that the object is hot

Explanation:

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. ... They contract when they lose their heat.

They atoms move around a lot and they are spread out, unlike the atoms in a cold object. The atoms in a cold object are compacted and only move a slight amount.

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explanation:

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