Respuesta :

Answer:

Explanation:

When a substance is heated, it gains thermal energy. Therefore, its particles move faster and its temperature rises. When a substance is cooled, it loses thermal energy, which causes its particles to move more slowly and its temperature to drop.

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Answer:

When a sample of solid, liquid, or gas matter cools down, it contracts. When matter cools down, its particles lose kinetic energy. The decreased kinetic energy lets the particles come closer together.

Explanation:

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