8.1.5 Phase Changes

Front

What is the formula for density?

Back

density = mass / volume

Front

What are the states of matter?

Back

solid, liquid, and gas

Front

What phase change does evaporation represent?

Back

Evaporation is the phase change from liquid to gas.

Front

Do all phase changes require energy to be added or taken away?

Back

True

Front

Are there molecules moving in a solid brick?

Back

Yes, molecules in a solid vibrate in place.

Front

What is the phase change from gas to liquid called?

Back

Condensation

Front

What is the phase change from solid to liquid called?

Back

Melting

Front

What is the phase change from liquid to solid called?

Back

Freezing

Front

What happens to the energy of molecules during evaporation?

Back

Energy is absorbed, allowing molecules to escape into the gas phase.

Front

What happens to the energy of molecules during condensation?

Back

Energy is released, allowing molecules to transition from gas to liquid.