Matter and Energy: Phase Changes

Last updated about 3 years ago

12 questions

Matter and Energy: Phase Changes

Last updated about 3 years ago

12 questions

Question 1

Condensation means

Change from a liquid to a solid

Change from a solid to a liquid

Change from a liquid to a gas at the surface of the liquid

Change from a gas to a liquid

Question 2

Evaporation means to change from a liquid to a gas at the surface of the liquid.

True

False

Question 3

Condensation is a change from a liquid to a gas.

True

False

Question 4

A change in matter from one state (such as solid, liquid, or gas) to another is called

a phase change

condensation

melting

Question 5

What happens to the particles of a liquid as the liquid freezes?

They speed up and move further apart

They slow down and move farther apart

They slow down and move closer together

They speed up and move closer together

Question 6

What happens to the particles of a liquid as the liquid evaporates?

They speed up and move further apart

They slow down and move farther apart

They slow down and move closer together

They speed up and move closer together

Question 7

Heat energy is added at a constant rate to a mixture of ice and liquid water. Which statement is true about that process?

The temperature rises as the ice and water mixture heats up

The temperature rises but only until the ice melts

The temperature stays constant until the ice melts

The temperature of only the liquid water rises (not the ice)

Question 8

Which if these statements about energy and phase changes is FALSE? Only one of them is FALSE.

It takes energy to melt a solid to a liquid because, in order to melt, the particles need to be speeded up and moved farther apart.

It takes energy to turn a liquid into a gas, because you have to destroy the particles that make up the liquid.

Energy flows(exit) out when a gas changes to a liquid.

As heat is added to a solid, the temperature won't change until all of the solid has melted.

Question 9

Which statement about the parts of a heating curve (the graph of temperature vs. amount of heat added) is true? Assume the heating curve begins with a solid.

The melting point and the freezing point are the same temperature.

The temperature rises at a constant rate as the heating happens.

The temperature rises faster during a phase change than it does when a phase change isn't happening.

The condensation point is at a lower temperature than the boiling point.

Question 10

10.

Which phase of matter has the slowest moving particles?

Solid

Liquid

Gas

Question 11

11.

In which phase of matter are the particles moving the fastest?

Solid

Liquid

Gas

Question 12

12.

In which phase change would energy be released (exothermic)?

Solid to liquid

Liquid to vapor

Solid to vapor

Liquid to solid