Phases of Matter Learning Task

Which state of matter takes the shape of its container but has a fixed volume?

• Solid

• Liquid

• Gas

• Plasma

What is the process called when a solid changes directly into a gas, skipping the liquid phase?

• Melting

• Evaporation

• Sublimation

• Condensation

When water vapor in the air forms frost on a cold surface, what phase change has occurred?

• Freezing

• Condensation

• Deposition

• Sublimation

What characteristic allows plasma to conduct electricity?

• Its neutral charge

• The presence of free electrons

• Its high temperature

• Its ability to take the shape of its container

In your own words, explain each of the 4 phases of matter.