Phases and Properties of Matter

What is matter?

• Any solid, liquid or gas

• Only Solids

• Light, heat and sound

How many phases of matter are there?

• 3

• 5

• 2

Name the 2 states of matter that have a fixed volume.

• Solid

• Liquid

• Gas

What causes matter to move from one phase (state) to another?

• Heat

• Time of day

• Smashing it

What is an example of a phase change?

• Smashing a glass window

• Burning a piece of paper

• Melting an ice cube

Why do you think a phase change is a physical change?

• Because a phase change does not change the identity of the substance

• Because a phase change is just a small change

• Because a phase change involves heat

What is a phase change from a solid to a liquid called?

• Melting

• Evaporation

• Freezing

• Condensation

What happens to the speed of the molecules as a substance move from a solid to a liquid?

• They speed up

• They slow down

Are you enjoying the video lesson?

• Yes

• No

What is the phase change called when a substance moves from a liquid to a solid?

• Freezing

• Melting

• Boiling

• Evaporation