Question

a puddle of water on the sidewalk evaporates and becomes water vapor. the water vapor travels through the air and comes into contact with a cold mirror. what happens next? choose all that apply:

1. it becomes a solid
2. it becomes a liquid
3. the molecules gain energy
4. the molecules loose energy

Answer 1

2. it becomes a liquid
4. its molecules lose energy

The change in state is due to the loss of energy.

Answer 2

2 and 4 is correct. I have same question