Which best describes the energy change that takes place during deposition?

• A. Energy is released as a gas turns directly into a solid.
• B. Energy is absorbed as a liquid turns into a solid.
• C. Energy is absorbed as a solid turns directly into a gas.
• D. Energy is released as a solid turns into a liquid.

Answer: (A)

Verified step by step guidance

1. Understand the process of deposition: it is the phase change where a substance goes directly from the gas phase to the solid phase without passing through the liquid phase.
2. Recall that phase changes from gas to solid involve a decrease in energy because the particles lose kinetic energy to form a more ordered solid structure.
3. Recognize that when energy is released during a phase change, the process is exothermic; when energy is absorbed, the process is endothermic.
4. Since deposition is gas turning directly into solid, it is an exothermic process where energy is released.
5. Therefore, the best description of the energy change during deposition is that energy is released as a gas turns directly into a solid.