Lesson 2.2

Question 1

When does evaporation occur?

Answer 1

Evaporation occurs when molecules in a liquid gain enough energy that they overcome attractions from other molecules and break away to become a gas.

Question 2

What does adding energy do to evaporation?

Answer 2

Adding energy increases the rate of evaporation.

Question 3

How do you conduct a proper experiment?

Answer 3

To conduct a valid experiment, variables need to be identified and controlled.

Question 4

When water evaporates do the water molecules themselves break apart or do whole water molecules separate from one another?

Answer 4

When water evaporates whole water molecules separate from one another.