Chapter 3 States of Matter

Gases have the strongest forces of attraction between particles.

A phase change is a reversible chemical change that occurs when a substance changes from one state of matter to another.

the volume of a gas is inversely proportional to its pressure if the temperature and number of particles are constant

In the combined gas law, the volume after a change occurs is represented by

Reducing the temperature of a gas will decrease its pressure if the volume and number of particles are constant.

the result of a force distributed over an area

The temperature of a substance increases during a phase change.

The __________ theory states that all particles of matter are in constant motion.

phase change from a gas to a liquid

Increasing the volume of a gas, increases its pressure if the temperature and number of particles are constant.

Which factor affects gas pressure?

phase change from solid to gas

Energy is either absorbed or released during a phase change.