Question

Which of the following phase changes involves a gas turning into a liquid? (1 point)
Responses

Boiling
Boiling

Sublimation
Sublimation

Condensation
Condensation

Freezing
Freezing
Question 2
If you keep a gas's temperature constant, how would you increase the volume of the gas? (1 point)
Responses

You would change the temperature
You would change the temperature

You would decrease the temperature
You would decrease the temperature

You would increase the pressure
You would increase the pressure

You would decrease the pressure
You would decrease the pressure
Question 3
Of five different laboratory solutions, the solution with the highest acidity has a pH of(1 point)
Responses

5
5

12
12

3
3

11
11

7

Answer 1

1. Condensation — a gas turning into a liquid.
2. You would decrease the pressure — at constant temperature (Boyle's law), lower pressure gives larger volume.
3. 3 — lower pH means higher acidity.