State Changes and Particle Motion

The particles that make up a liquid have _____ kinetic energy than the particles that make up a solid.

• less

• more

• the same amount of

______ is the measure of the average kinetic energy of all of the particles in an object.

The transfer of thermal energy from one object to another

• temperature

• state

• potential energy

• heat

Increasing the thermal energy of a solid will cause it to

• freeze

• condense

• melt

• boil

Increasing the thermal energy of a liquid will cause it to

• vaporize

• condense

• freeze

• melt

The thermal energy of a liquid is increased. Which statement is true?

• The particles in the liquid will slow down and move farther apart

• The particles in the liquid will speed up and move farther apart

• The particles in the liquid will slow down and move closer together

• The particles in the liquid will speed up and move closer together

The temperature of a liquid is decreasing. Which is true about the particles that make up the liquid?

• Their kinetic energy will decrease

• Their kinetic energy will increase

• Their thermal energy will increase

• Their kinetic energy stays the same, only potential energy decreases

What will happen when the temperature of a liquid decreases below the melting point?

• evaporation

• condensation

• melting

• freezing

Which of these describes evaporation?

• Vaporization that occurs within a liquid

• Condensation of gases, changing them into a liquid

• Vaporization that occurs only on the surface of a liquid

• The change of a solid to a gas, skipping the liquid phase

______ is the vaporization that occurs within a liquid when it is heated.