8th_CH.7 (Foundations of Chem) Quiz

At higher temperatures

• particles in an object have less energy
• particles in an object move faster
• a gas contracts

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Freezing

• Solid to gas
• Liquid to solid
• Gas to solid
• Liquid to gas

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Boiling

• liquid to gas
• gas to solid
• gas to liquid
• solid to liquid

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Particles of a liquid

• are tightly packed together and stay in a fixed position.

• have no viscosity.

• decrease in volume with increasing temperature.

• are free to move around one another but still touch.

What term describes a solid changing to a gas?

• Deposition

• Sublimation

• Evaporation

• Freezing

The speed of the molecules determines the _____.

• volume
• density
• pressure
• temperature

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Thermal energy is...

• heat energy.

• the energy of motion

• energy of nuclear processes.

• an indication of physical change.

A physical change is...

• a change that doesn't change the identity
• a change that makes something new.
• a chemical reaction

Tags

NGSS.MS-PS1-4

A chemical change

• doesn't really change much.
• creates a new substance
• is a change in the state of matter

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Can a mixture be separated? 

• No
• Yes
• Only sometimes