What is a molecule?

• A single particle of matter

• A group of atoms bonded together

• A liquid turning into a gas

• A solid turning into a liquid

Tags

NGSS.MS-PS1-1

What phase change occurs when a solid turns into a liquid?

• Freezing

• Evaporation

• Melting

• Condensation

Tags

NGSS.MS-PS1-4

What phase change occurs when a gas turns into a liquid?

• Evaporation

• Condensation

• Melting

• Freezing

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What must happen for matter to change states?

• Pressure must be increased

• Heat must be added or removed

• Light must be added

• Sound must be increased

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

During melting, is energy added or removed?

• Removed

• Added

• Neither

• Both

Tags

NGSS.MS-PS1-4

During condensation, is energy added or removed?

• Added

• Removed

• Neither

• Both

Tags

NGSS.MS-PS1-4

What is the process called when heat is removed from a liquid to form a solid?

• Melting

• Freezing

• Evaporation

• Condensation

Tags

NGSS.MS-PS1-4

How do molecules in a solid move?

• Freely in all directions

• Vibrate in the same position

• Move throughout the container

• Spin rapidly

How do molecules in a liquid move?

• Vibrate in place

• Move throughout and around the container

• Stay still

• Move in a fixed pattern

Tags

NGSS.MS-PS1-4

How do molecules in a gas move?

• Slowly in one direction

• Rapidly in all directions, frequently colliding with each other and the side of the container

• In a fixed pattern

• Not at all

Tags

NGSS.MS-PS1-4