Chemistry

Question Analysis
This question tests the student's understanding of the definition and recognition of sublimation, a phase change process.

Key Concept Explanation
Sublimation is the process where a solid changes directly into a gas without passing through the liquid phase. This is an endothermic process, meaning it requires energy.

Step-by-step Solution
1. Identify the process described in each option.
2. Determine if the process involves a direct change from solid to gas.
3. Option A: Ice melting into water (solid → liquid) - not sublimation.
4. Option B: Water vapor condensing into liquid water (gas → liquid) - not sublimation...