Kinetic Molecular Theory

1
Chapter 15

• Kinetic Molecular Theory

2
Some Amazing Things
3
Kinetic Theory
4
Kinetic Theory

• All matter is composed of tiny particles.

5
Kinetic Theory

• All matter is composed of tiny particles
• Atoms

6
Kinetic Theory

• All matter is composed of tiny particles
• Atoms
• Molecules

7
Kinetic Theory

• All matter is composed of tiny particles
• Atoms
• Molecules
• Ions

8
Kinetic Theory

• These tiny particles are in constant motion.

Liquid
Gas
Solid
9
Kinetic Theory

• Collisions between moving particles are perfectly
  elastic.
• In an elastic collision there is no net change in
  kinetic energy.

10
Pressure

• Pressure depends on two factors
• Force
• Area
• Pressure

Force Area
11
Examples of Pressure
12
Gas Pressure
13
Temperature

• How hot or cold
• Average kinetic energy

14
How do we lower temperature?

• We slow down the particles.

15
Absolute Zero

• K C 273
• C K - 273

16
Kinetic Energy

• KE ½ mv2
• When considering kinetic energy we must consider
  two factors.
• Mass
• Velocity

17
New Discipline System
18
Old Fashioned Discipline
19
New Discipline System Old Fashioned Discipline
20
Im Here for Class Mr. Stillwell.
21
Wheres Mr. Stillwell?
22
Do Not Touch
HCN
H2S
23
Die
Stink
Or
24
And Die
Stink
25
Do Not Touch
HCN
H2S
26
Do Not Touch
HCN 27 amu
H2S 34 amu
27
Homework

• Worksheet 34 Temperature and Particle Motion