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The Kinetic Molecular Theory (KMT) explains changes of state by describing how the motion and interactions of molecules change as temperature or pressure is altered. For example, when a substance is heated, the molecules gain kinetic energy and move faster, leading to a change from a solid to a liquid or a liquid to a gas. Similarly, increasing pressure can compress gases and cause them to change from a gas to a liquid or solid state.

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1y ago

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