Changes of State

The change from liquid to solid, or the reverse of melting, is called:

• freezing
• condensation
• boiling
• sublimation

What is vaporization?

• a liquid becoming a gas
• a gas becoming a liquid
• a liquid becoming a solid
• a gas becoming a solid

During the process of sublimation,

• a solid turns directly into a gas
• a liquid turns to a gas
• a solid turns into a liquid
• a gas turns directly into a solid

A shrinking puddle is an example of ___________, or vaporization that takes place only on the surface of a liquid.

• evaporation
• boiling
• freezing
• melting

What happens when the particles in a liquid move so slowly that they begin to take on fixed positions?

• Condensation
• Vaporization
• Melting
• Freezing

The characteristic temperature at which a pure solid changes to a liquid is its __________ point.

• melting

• boiling

• condensation

• pressure

_______ occurs when a liquid changes to a gas below its surface as well as at the surface.

• Boiling
• Evaporation
• Freezing
• Melting

What happens when the particles in a gas lose enough thermal energy to form a liquid?

• condensation

• vaporization

• deposition

• freezing

The characteristic temperature at which a pure liquid changes to a gas is its __________ point.

• boiling

• melting

• sublimation

• pressure

A student put 200 milliliters (mL) of water into a pot, sets the pot on a burner, and heats the water to boil. When the pot is taken off the burner, it contains only 180 milliliters (mL) of water. What happened to the rest of the water?

• It was used up.
• It condensed.
• It was absorbed by the heat.
• It turned into water vapor.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5