Chemistry test

Question 1

Melting

Answer 1

Melting is a phase change from a solid to a liquid. Molecules speed up, move farther apart, and absorb heat energy.

Question 2

Freezing

Answer 2

A phase change from liquid a liquid to a solid. Molecules slow down, move closer together and release heat energy.

Question 3

boiling

Answer 3

A phase where the change from liquid to gas occurs. It occurs at the boiling point of matter.

Question 4

Evaporation

Answer 4

phase change from a liquid to a gas on the surface of a liquid (occurs at all temperatures).

Question 5

Condensation

Answer 5

When a phase change from a gas to a liquid

Question 6

Sublimation

Answer 6

Phase of change from solid to gas molecules speed up and move farther apart and absorb heat energy.

Question 7

Deposition

Answer 7

Phase change from gas to a solid. Molecules slow down, move closer together and release heat energy.

Question 8

Gas pressure

Answer 8

Gas pressure is caused by gas particles colliding with the walls of the container.

Question 10

Atmospheric pressure

Answer 10

It is the force exerted on a surface by the air above it as gravity pulls it to Earth.

Question 11

Inverse relationship

Answer 11

An Inverse relationship is one type of relationship between variables