Which of the following best describes the phase change(s) observed from the initial to final frame?

• A. Gas to solid (deposition)
• B. Solid to liquid (melting)
• C. Liquid to gas (evaporation)
• D. Liquid to solid (freezing)

Answer: (B)

Verified step by step guidance

1. Identify the initial phase of the substance in the problem (e.g., solid, liquid, or gas) by carefully examining the description or images provided.
2. Identify the final phase of the substance after the change has occurred, noting whether it is solid, liquid, or gas.
3. Recall the definitions of phase changes: melting is solid to liquid, freezing is liquid to solid, evaporation is liquid to gas, and deposition is gas to solid.
4. Compare the initial and final phases to determine which phase change matches the transition observed (for example, if the substance goes from solid to liquid, the phase change is melting).
5. Select the phase change that corresponds to the observed transition based on the comparison and definitions.