1. Which phase of matter has the greatest particle motion?

A. solid

B. liquid

C. gas

D. all three phases of matter particles have the same motion

2. A location experiences a drought. What is lacking in that location?

A. rainfall

B. nitrogen

C. wind

D. oxygen

3. What is the name of the part in a desalination plant where a substance leaves a system?

A. intake

B. vacuum pump

C. water pump

D. outlet

4. Which particles would have the fastest motion?

A. cold water

B. warm water

C. hot water

D. steam

5. What is the function of a condenser in a desalination plant?

A. to change solid ice into liquid water

B. to change liquid water into water vapor

C. to change water vapor into liquid water

D. to liquid water into solid ice

6. Some liquid particles are placed in a flash chamber in a desalination plant. What should happen to the kinetic energy of the liquid particles?

A. increase

B. decrease

C. remain the same

7. Some gas particles of water are placed in a condenser in a desalination plant. What should happen to the kinetic energy of the gas particles?

A. increase

B. decrease

C. remain the same

8. Ocean water is not safe for people to drink without being treated to remove the salt.

A. true

B. false