Particle Theory of Matter (See handout for a complete list)

1. Particle Theory of Matter(See handout for a complete list) • Space: The spaces between the particles are very large compared to the sizes of the particles themselves. • Speed: The particles in matter are in constant motion. • Stickiness: The particles in matter attract one another.

2. States of Matter • Physical state is based on • The nature of the bonds between the particles (potential energy, “stickiness”) • The motion of the particles (kinetic energy, “speed”)

3. Solids • Rigid • Definite shape • Definite volume

4. Solids • Stickiness of bonds limits particle motion • Particles vibrate in relatively fixed positions (low speed)

5. Solid State – 4 particles

6. Solid State – Multiple Particles

7. Liquids • Definite volume • Takes shape of container

8. Liquids • Stickiness of the bonds is lower than in solids • Particles have more speed than in solid state

9. Liquid – 4 particles

10. Liquid – Multiple Particles

11. Gases • No definite shape • No definite volume • Takes shape of container

12. Gases • Stickiness between particles is zero • Greater speed than in solid and liquid states

13. Gas – 4 particles

14. Gas – Multiple Particles