Assessment: Thermal Energy (States of Matter)

Which statement best describes a solid?

• molecules conform to the shape of their container

• molecules are packed in a regularly ordered repeating pattern

• molecules are not affected by intermolecular forces

A phase change is when________________

• a laser is used on matter

• temperature changes

• a graph shows temperature

• matter changes state

Particles in a _________ are tightly packed in a regular pattern.

• liquid

• solid

• gas

• plasma

Solid to gas:

• deposition

• sublimation

• condensation

• evaporation

Gas to liquid:

• evaporation

• condensation

• melting

• freezing

Which of the following is true as you go from a solid to a gas?

• The atoms decrease in speed

• The atoms move closer together

• The atoms increase in speed

• The atoms do not change

What happens as liquid iron cools?

• The atoms slow down and move further apart

• The atoms speed up and move further apart

• The atoms slow down and move closer together

• The atoms speed up and move closer together

Change in color, production of light, production of heat, and production of a gas are clues that a ___ change has occurred.

• chemical change

• physical change

• change in state of matter

Cutting wood is what type of change?

• Physical

• Chemical

Burning wood is what type of change?

• Physical

• Chemical