Question

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.

Answer 1

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.

Answer 2

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