Physical Science Do Now 9/2 (phases)

When the temperature of matter decreases, the particles...

• speed up and move farther apart

• speed up and move closer together

• slow down and move farther apart

• slow down and move closer together

A gas...

• has a definite shape but no definite volume

• has a definite volume but no definite shape

• has fast-moving molecules

The phase opposite phase of melting is...

• freezing

• melting

• condensation

• evaporation

All changes in the state of matter of a substance requires...

• vibration

• water

• permission

• energy

In a solid, the molecules...

• vibrate in place

• slide past one another

• move quickly all over the place

All phase changes requires energy to be added or taken away.

• True

• False

Molecules are closest together in a...

• liquid

• solid

• gas

The molecules in this state of matter are showing what phase?

• solid

• liquid

• gas

The molecules in this state of matter are showing what phase?

• solid

• liquid

• gas

Matter is _______________________________.

• The amount of matter in an object.

• The amount of space an object occupies.

• Anything that has mass and volume.