Heat & Phase Change Review

Phase change going from Liquid to Solid...

• Melting

• Freezing

• Condensation

• Sublimation

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Phase change going from a Solid to a Liquid...

• Freezing

• Condensation

• Melting

• Sublimation

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

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

• evaporation
• precipitation
• condensation
• sublimation

Tags

NGSS.MS-ESS2-4

NGSS.MS-PS1-4

7. All phase changes (changing states) requires energy to be added or taken away.

• True
• False

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

NGSS.MS-PS3-4

How are solids different from liquids?

• particles in solids are moving freely around each other.
• particles in solids have no motion.
• particles in solids are vibrating in place.
• particles in solids have more motion than in liquids

A gas

• has a definite shape but no definite volume
• has a definite volume but no definite shape
• has fast-moving particles

Tags

NGSS.MS-PS1-4

Based on the heating curve, what happens to the particles within a substance as it changes from a liquid to a gas?

• When changing to a gas, the particles within a substance break free of each other, move randomly and freely, with no defined volume.
• As the temperature decreases, the particle vibrations within a substance increases, causing them to move faster and more freely.
• When changing to a gas, the particles within a substance slide past each other, move randomly and freely, with a defined volume
• Intermolecular forces hold the particles within the substance close together during the phase change. 

Tags

NGSS.MS-PS1-4

A change of state is a(n) ___________ process

• reversible

• irreversible

• fun

• chemical

Tags

NGSS.MS-PS1-4

As a change of state, from solid to liquid, takes place heat _____ and temperature _______.

• increases, stays the same

• stays the same, stays the same

• stays the same, changes

• increases, increases

Tags

NGSS.MS-PS1-4