Amplify Chapter 3 Phase Change Key Concept

Which phase change occurs when a solid turns to a liquid?

• Melting

• Condensing

• Vaporizing

• Freezing

Tags

NGSS.MS-PS1-4

Which phase change occurs when a liquid turns to a gas?

• Melting

• Condensing

• Evaporating

• Freezing

Tags

NGSS.MS-PS1-4

You are relaxing on some grass when you notice LIQUID water droplets have begun to seemingly disappear off the grass leaves. Which answer BEST explains what PHASE CHANGE has occurred AND how the molecule ARRANGEMENT has changed?

• The PHASE CHANGE that has occurred is EVAPORATION and the molecule ARRANGEMENT has become FARTHER APART.

• The PHASE CHANGE that has occurred is FREEZING and the molecule ARRANGEMENT has become CLOSER.

• The PHASE CHANGE that has occurred is MELTING and the molecule MOVEMENT has become FASTER.

Tags

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

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

What is the average kinetic energy of a substance called?

• volume
• temperature
• pressure
• movement

Tags

NGSS.MS-PS1-4

When a substance melts, the kinetic energy _____________.

• decreases
• stays the same
• increases
• decreases then increases

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

When molecules move slower, kinetic energy

• increases
• stays the same
• decreases
• none of these

Tags

NGSS.MS-PS3-1

Are there molecules moving in a solid?

• yes

• no

• maybe

• not sure

Tags

NGSS.MS-PS1-4

In our Amplify story, the liquid methane lake...

• EVAPORATED

• FROZE

• CONDENSED

• SUBLIMATED

Tags

NGSS.MS-PS1-4