Which term describes the process by which a gas changes directly into a solid?

• A. Melting
• B. Condensation
• C. Sublimation
• D. Deposition

Answer: (D)

Verified step by step guidance

1. Understand the phase changes between states of matter: solid, liquid, and gas.
2. Recall that melting is the process where a solid changes into a liquid.
3. Know that condensation is the process where a gas changes into a liquid.
4. Recognize that sublimation is the process where a solid changes directly into a gas without passing through the liquid phase.
5. Identify that the reverse of sublimation, where a gas changes directly into a solid without becoming a liquid first, is called deposition.