Particle Behavior
Changes of State
Laws & Theories
Vocabulary
100

The state of matter with the fastest particle motion

What is a gas?

100

During a change of state, if this type of energy is removed, it causes the potential energy of particles to decrease as they get closer together.

What is thermal energy?

100

An explanation of how particles move in all states of matter.

What is the kinetic molecular theory?

100

the gas state of a substance that is usually a solid or liquid

What is a vapor?

200

The state of matter that has the greatest attractive forces between particles

What is a solid?

200

During a change in state, this type of energy is either increasing or decreasing

What is potential energy?

200
1. all matter is made of tiny particles

2. particles are in constant, random motion

3. particles collide with each other and the walls of their container

4. when particles collide, no energy is lost

What are the four parts of kinetic molecular theory?

200

a measurement of a liquid's resistance to flow

What is viscosity?

300

the cause of stronger or weaker attractive forces between particles

What is the distance between particles?

300

Melting, vaporization, and sublimation

What are changes of state that occur when thermal energy is added?

300

a law that states that the pressure of a gas decreases as the volume increases, and the pressure increases when volume decreases, as long as temperature remains constant.

What is Boyle's law?

300

the average kinetic energy of particles

What is temperature?

400

a graph that is commonly used to demonstrate the movement of particles during changes of state

What is the heating curve of water?

400

a change in state in which a gas turns directly into a solid

What is deposition?

400

a law that states that the volume of a gas increases as the temperature increases, if the pressure remains constant

What is Charles's law?

400

the uneven forces acting on particles at the surface of the liquid

What is surface tension?

500

when the temperature of the material stays the same but the distance between particles is changing

What is a change in state?

500

a change in state that occurs when a solid changes directly to a gas

What is sublimation?

500
Charles's law involves the relationship between volume and temperature, while Boyle's law describes a relationship between pressure and volume.

What is the difference between Charles's law and Boyle's law?

500

the variable that is being tested in a controlled experiment

What is an independent variable?