Changes in State

A substance changes states when its thermal energy

• increases only

• increases or decreases

• decreases only

• temperature changes

Tags

NGSS.MS-PS1-4

The change in state from solid to liquid

• melting

• freezing

• sublimation

• condensation

Tags

NGSS.MS-PS1-4

At what point do the particles of a solid break free from their fixed positions?

Tags

NGSS.MS-PS1-4

The change in state from liquid to solid

• condensation

• melting

• freezing

• vaporization

Tags

NGSS.MS-PS1-4

Name some solids that melt at temperatures that are higher than room temperature (about 20 degrees Celsius)

Answer explanation

sample answers: plastic, candle wax, butter, chocolate, marshmallows, ice, ice cream

Tags

NGSS.MS-PS1-4

What happens to materials after they cool down from a liquid state?

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

The change in state from a liquid to a gas

• evaporation

• vaporization

• condensation

• sublimation

Tags

NGSS.MS-PS1-4

What are the two main types of vaporization

Answer explanation

boiling and evaporation

Tags

NGSS.MS-PS1-4

Vaporization that only takes place on the surface is called

The temperature at which a liquid boils is called

• boiling temperature

• thermal energy

• melting point

• boiling point