Phase Changes

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

• Sublimation
• Condensation
• Liquid

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What happens to particles when they are heated?

• They speed up and spread out
• They slow down and compress
• They stop moving
• They move closer together and speed up

Tags

NGSS.MS-PS1-4

What happens to particles when they are cooled?

• They speed up and spread out

• They slow down and compress

• They stop moving

• They move closer together and speed up

What does a gas change into if it is cooled?

• Solid

• Liquid

• Stays a Gas

What does a solid change into if it is heated?

• Solid

• Liquid

• Stays a Gas

change from liquid to gas is called....

• expansion
• evaporation
• condensation
• sublimation

Tags

NGSS.MS-PS1-4

All changes in the state of matter of a substance requires

• vibration

• water

• permission

• heat to be added or taken away

When heat is added to a liquid, what occurs?

• Liquid molecules begin to condense to form a solid.

• Liquid molecules are being slowed down to become a gas.

• Liquid molecules speed up and begin to spread out to become a gas.

• Liquid molecules begin to slow down to become a solid.

Tags

NGSS.MS-PS1-4

When heat energy and temperature are at their lowest, what state of matter is a substance in?

• Gas

• Vapor

• Solid

• Liquid

Tags

NGSS.MS-PS1-4

Which state of matter do molecules have the most energy?

• Solid

• Liquid

• Gas