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2. Which of the following accurately describes the effects of temperature changes on solids? A. If the temperature of a solid is increased, the solid contracts and its volume increases. B. If the temperature of a solid is increased, the solid expands and its volume increases. C. If the temperature of a solid is decreased, the solid contracts and its volume increases. D. If the temperature of a solid is decreased, the solid expands and its volume decreases.

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B. If the temperature of a solid is increased, the solid expands and its volume increases.

Answer;

B. If the temperature of a solid is increased, the solid expands and its volume increases.

Explanation;

  • As temperature increases heat energy is applied to the parts of the solid, thus causing a higher vibration and movement of molecules.
  • This causes the molecules to push against one another and thus the overall volume of the solid increases.  The solid may then change state to a liquid state.
  • Thus, an increase in temperature, causes the solid to expand and thus an increase in volume.

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