1. The Particle Theory of Matter

2. The Particle Theory
Summarizes what scientists know about particles that make up matter…

3. Particle Theory of Matter
All matter is made of tiny particles that have have empty spaces around them.

4. The Particle Theory Particles in a Gas
Very far apart; big spaces between particles
Move very quickly; move in any direction
Have no definite shape or volume; fill up the container they are in
Weak attraction between particles
Particles in a Gas

5. The Particle Theory Particles in a Liquid
Particles are closer together; move more slowly
Particles in a liquid are loosely bonded so they slide over each other
Liquids have a definite volume, but not shape

6. The Particle Theory
Particles are very close and tightly packed together; particles do not move around
Particles in a solid are attracted to each other; strong bonds
Solids have a definite shape and volume
Particles in a Solid

7. Particle Theory of Matter
2. Different substances are made up of different types of particles.

8. 3. Particles are always in constant random motion.
Particle Theory of Matter
3. Particles are always in constant random motion.

9. The Particle Theory
Solid
Gas
Liquid

10. Particle Theory of Matter
4. Particles move faster as temperature increases. When heated, particles gain energy.

11. 5. The particles in a substance attract each other.
Particle Theory of Matter
5. The particles in a substance attract each other.
The amount of attraction is different for different substances GASES: Weak LIQUIDS: Strong SOLIDS: Very Strong

12. Solids
Solids
Particles of solids are closely packed in an orderly manner
Vibrate about their fixed positions

13. Liquids
Liquids
Particles of a liquid are closely packed in a disorderly pattern
The particles move past one another

14. Gases Gases Particles of a gas are spread far apart from one another
The attraction between the particles is weak

15. The Particle Theory
The temperature of a liquid, solid or a gas refers to how fast its particles are moving. The faster the particles move, the higher the temperature. The higher the temperature the more energy the particles have
Low Temperature
High Temperature
Medium Temperature

16. Chemistry…a volatile history