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13 February, 12:49

What is the relationship between the internal energy of a substance and its particle movement?

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  1. 13 February, 13:57
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    Answer: The closeness, arrangement and motion of the particles in a substance change when it changes state. Materials are a store of internal energy, due to the motion of particles and the chemical bonds between them. When a substance is heated, its internal energy increases: the movement of its particles increases.
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