Unit 2 Section 2 MATTER

Which state of matter has molecules that move fastest and spread to fill the space they are in?  They do not form any pattern.

• solid 
• liquid 
• gas

What is matter?

• a pure substance
• anything that occupies space and possesses mass
• an element
• a compound

A measure of the amount of matter in an object. 

• Weight
• Mass

What is the measure of how much space an object takes up?

• matter
• volume
• substance
• properties

Which form of matter take the shape of a container like this juice?

• liquid
• solid
• glass
• gas

What happens when my glass of water is sitting in the sun and disappears into a gas?

• evaporation
• burning
• melting
• freezing

In a solid, the particles

• vibrate in place
• slide past one another
• overcome the strong attraction
• move freely in any direction

Freezing (or solidification) is . . . .

• liquid to solid
• solid to liquid
• solid to gas
• solid to plasma

5. What is it called when a solid turns directly into a gas?

• Sublimation
• Condensation
• Liquid

The phase change from water vapor to liquid water is known as...

• evaporation
• precipitation
• condensation
• sublimation