Phase Change

An analogy of a concert is used to describe molecules of H2O during phase change. What are the moleculed doing at the solid stage?

• standing, not moving much

• listening to the warm up band, slowly moving

• Jumping around, like a mosh pit

• Standing

Using the same analogy what is H2O at the liquid stage?

• Standing, not much movement

• disorganized, jumping in a mosh pit

• some movement, listening to the warm up band

Using the same analogy, what is H2O at the gas stage?

• Moving fast, in the mosh pit

• some movement, listening to the warm up band

• standing, not moving much

Ice changing to liquid changing to gas is called....

• vaporization

• condensation

• phase change

• melting

The more the molecules were heated

• The slower they moved

• The faster they moved

• no change in the movement of the molecules

Liquid changing to gas is called

• condensation

• Vaporization

• freezing

solid changing to liquid is

• Freezing

• vaporization

• melting

Gas becomes a liquid

• condensation

• melting

• vaporization

to chance gas to a solid...

• add heat

• remove heat

• increase energy

When heat is removed, the molecules become...

• faster

• slower

• vaporized

• stagnant