Chemistry

Question Analysis
This question involves identifying a real-world example of deposition. The main focus is on applying the definition of deposition (gas → solid, no liquid phase) to everyday observations.

Key Concept Explanation
Deposition is an exothermic phase change where a gas transitions directly to a solid without passing through the liquid phase. It is the reverse of sublimation. Common examples include frost formation and snow formation in clouds under specific conditions.

Step-by-Step Solution
1. Recall the definition of deposition: Gas → Solid (direct transition).
2. Analyze each option:
A. Water droplets (liquid) from water vapor (gas): Condensation (eliminate).
B. Frost (solid ice) from water vapor (gas) on a cold window: Direct gas→solid (matches depositio...