1. The Kinetic Molecular Theory

2. The Kinetic Molecular Theory
Kinetic energy- is energy that an object has because of its motion. The Kinetic Molecular Theory- explains the forces between molecules and the energy that they possess. This theory is based on three theories about matter.

3. The Kinetic Molecular Theory
1. Matter is composed of small particles (atoms, molecules, and ions).

4. The Kinetic Molecular Theory
2. The space the molecules occupy (volume) depends on the space between the molecules and not the space the molecules occupy themselves.

5. The Kinetic Molecular Theory
3. The molecules are in constant motion. This motion is different for each of the three states of matter. They are colliding with each other and the walls of their container. When the molecules collide with each other, or with the walls of a container, there is no significant loss of energy.

6. SOLIDS
Solids have definite shape and definite volume.

7. Particles in Solids:
Are packed tightly together Have very little energy Vibrate in place

8. LIQUIDS
Liquids take the shape of their container and have definite volume.

9. Particles in Liquids:
Are loosely packed Have medium energy levels Particles flow around each other

10. Gases
Gases spread out to fill the entire space given and do not have definite volume.

11. Particles in Gases:
Move freely Have LOTS of energy

12. What would it take for matter to move from one state to another?
STATES of matter?
What would it take for matter to move from one state to another?

13. Energy determines the state!

14. Add or Subtract Energy. . .
When energy is added, particles move faster! When energy is taken away, particles move slower!

15. Phases and Phase Changes