Unit 6 - Lesson 6: 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
• Schaffer
• pressure

When a gas forms directly from a solid, skipping the liquid phase. it is called

• deposition
• sublimation
• evaporation
• condensation

The change from a gas to a liquid is called 

• condensation
• evaporation
• sublimation
• deposition

When you add heat to a liquid, turning it to gas, the process is called

• vaporization
• sublimation
• condensation
• deposition

Both boiling and evaporation are forms of vaporization.  What is the difference between them?

• Boiling matter has intense heat added to it, evaporating matter has very little heat added to it.
• Boiling happens quickly, evaporation happens slowly.
• Evaporation occurs only at a liquid's surface, boiling occurs throughout the liquid
• All of these reasons