KMT and Phase Changes SDL Assessment of Learning

A gas has

• a. a definite volume but no definite shape.

• b. a definite shape but no definite volume.

• c. no definite shape or definite volume.

• d. a definite volume and definite shape.

Ninety-nine percent of all the matter that can be observed in the universe exists as

• a. gases.

• b. plasmas.

• c. liquids.

• d. solids.

Matter that has a definite volume but no definite shape is a

• a. liquid.

• b. solid.

• c. gas.

• d. plasma.

If you move a substance from one container to another and its volume changes, the substance is a

• a. solid.

• b. liquid.

• c. gas.

• d. solution.

Forces of attraction limit the motion of particles most in

• a. a solid.

• b. a liquid.

• c. a gas.

• d. both b and c

What is the result of a force distributed over an area?

• a. temperature

• b. volume

• c. pressure

• d. mass

Which of the following factors affects the pressure of an enclosed gas?

• a. temperature

• b. volume

• c. number of particles

• d. all of the above

The temperature and volume in a closed container of gas remain constant. If the number of particles of gas is increased, the gas pressure will

• a. increase.

• b. decrease.

• c. remain constant.

• d. cause a decrease in the average kinetic energy of the particles.

What type of change occurs when water changes from a solid to a liquid?

• a. a phase change

• b. a physical change

• c. an irreversible change

• d. both a and b

The phase change that is the reverse of condensation is

• a. freezing.

• b. sublimation.

• c. vaporization.

• d. melting.