1. Chapter 7
Lesson 3

2. Lesson 3 Reading Guide - KC
The Behavior of Gases
How does the kinetic molecular theory describe the behavior of a gas?
How are temperature, pressure, and volume related in Boyle’s law?
How is Boyle’s law different from Charles’s law?
Lesson 3 Reading Guide - KC

3. Understanding Gas Behavior
The kinetic molecular theory states that the particles in matter collide with other particles, other objects, and the walls of their container; and when particles collide, no energy is lost.
Lesson 3-1

4. What is pressure?
Pressure is the amount of force applied per unit of area.
The empty spaces between particles makes gases compressible.
Lesson 3-2

5. Pressure and Volume
When the volume of a container holding gas is greater, the additional space results in fewer collisions and pressure is less.
Lesson 3-3

6. Boyle’s Law
Boyle’s law states that pressure of a gas increases if the volume decreases and pressure of a gas decreases if the volume increases, when temperature is constant.
Lesson 3-4

7. Temperature and Volume
Changing the temperature of a gas affects its behavior.
As the temperature of a gas increases, kinetic energy increases, the particles move farther apart, and volume increases.
Lesson 3-5

8. Charles’s Law
Charles’s law states that the volume of a gas increases with increasing temperature, if the pressure is constant.
Lesson 3-6

9. The volume of a gas increases when the temperature increases at constant pressure.
Lesson 3-6

10. A change of state occurs as energy transfers to or from a material
A change of state occurs as energy transfers to or from a material. Energy is conserved, or the same amount of energy is transferred, as a material changes state and then back to its original form.
The BIG Idea