Changes of State of Matter

What happens to the attractive forces between molecules when a material is heated?

• They become stronger.

• They remain unchanged.

• They cause the material to freeze.

• They break, allowing particles to rearrange.

How does evaporation differ from boiling?

• Boiling occurs at the surface, while evaporation happens throughout the liquid.

• Evaporation is slower and occurs only at the surface, while boiling happens throughout the liquid.

• Boiling is slower and occurs only at the surface, while evaporation happens throughout the liquid.

• Evaporation occurs throughout the liquid, while boiling only at the surface.

What is the process called when a gas turns into a liquid?

• Evaporation

• Condensation

• Freezing

• Sublimation

What is sublimation?

• The process of a gas turning into a liquid.

• The process of a liquid turning into a solid.

• The process of a liquid turning into a gas.

• The process of a solid turning directly into a gas.

What remains constant when a material changes its state?

• The color

• The temperature

• The mass

• The volume