Lesson Check: Changes in Temperature

The temperature at which a liquid becomes a gas is the ____ point.

• Freezing

• Boiling

• Condensation

• Melting

The state of matter of a material depends on its _____.

• Density

• Temperature

• Volume

• Weight

The evaporation of water is an example of a change in .

• state

• solids

• density

• freezing

The water molecules shown in the model have longer arrows than other water molecules because.

• The model represents a solid changing to a liquid or a liquid changing to a gas or that adding thermal energy changes a gas to a solid.

• The model represents a solid changing to a liquid or a liquid changing to a gas or that adding thermal energy changes a gas to a liquid

• The model represents some of the water molecules absorbed more thermal energy than other water molecules and therefore have more motion.

• The model represents a solid changing to a liquid or a liquid changing to a gas or that adding thermal energy changes a liquid to a solid.

Look at the image and describe what will eventually happen to the water level in the beaker. Explain your reasoning

• The water level in the beaker will eventually go down because some of the liquid water changes into ice (a solid) and the particles get closer together in the beaker.

• The water level in the beaker will eventually stay the same because some of the liquid water changes into water vapor (a gas) and leaves the beaker.

• The water level in the beaker will eventually go up because some of the liquid water changes into water vapor (a gas) and leaves the beaker.

• The water level in the beaker will eventually go down because some of the liquid water changes into water vapor (a gas) and leaves the beaker.

A change in the state of matter is caused if enough _____ is added to or removed from an object.

• Kinetic energy

• Force

• Thermal energy

• Potential energy

During a hot shower, water vapor fogs up the cooler mirror when it turns to water. This is an example of _____________.

• Condensation

• Deposition

• Sublimation

• Vaporization

Marco put a pot of water on to boil eggs. After a few minutes, all the water was gone. This is an example of _____.

• Condensation

• Deposition

• Sublimation

• Vaporization

Which model best represents a change that results from adding thermal energy to a substance in a jar?

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The change in state from a gas to a liquid is called?

• Freezing

• Boiling

• Condensation

• Melting