Chemistry

Question Analysis
This question tests the student's understanding of the changes in interparticle forces and particle motion during the phase change from gas to liquid.

Key Concept Explanation
During the phase change from gas to liquid (condensation), the interparticle forces strengthen as the particles come closer together, and the particle motion decreases as the particles slow down.

Step-by-step Solution
1. Identify the phase change described: gas to liquid (condensation).
2. Recall the changes in interparticle forces: they strengthen.
3. Recall the changes in particle motion: it decreases.