1. The Particle Theory

2. The Particle Theory consists of five statements.
The Particle Theory explains how all matter (liquid, solid, gas) are structured and how they react under certain conditions.
The Particle Theory consists of five statements.

3. The Particle Theory 1. All matter is made up of very small particles.
2. There is space between particles.

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

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 in a Solid
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

7. 3. All particles in a pure substance are the same.
The Particle Theory
3. All particles in a pure substance are the same.

8. The Particle Theory
A pure substance is a material made up of only one kind of extremely small particle.
Each pure substance has its own kind of particle, different in shape and size from the particles of other pure substances.

9. The Particle Theory
The white particles in this picture represent sugar, while the blue particles represent water.

10. T The Particle Theory he Particle Theory
Other examples of pure s
4. The particles in matter are always in motion.

11. The Particle Theory
Looking at the website will give you a visual representation on how quickly the states of matter move.
Gas
Liquid
Solid

12. The Particle Theory
When particles are heated, or gain energy, they move faster and the spaces in between them expand in size.

13. The Particle Theory
When particles are cooled, or lose energy they move slower and the spaces in between them contract in size.

14. The Particle Theory
If the transfer of energy is quite dramatic, the state of matter changes.

15. The Particle Theory

16. 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.
High Temperature
Medium Temperature
Low Temperature

17. 5. Particles are attracted to each other.
The Particle Theory
5. Particles are attracted to each other.

18. A substance will dissolve
The Particle Theory
A substance will dissolve
(the particles are broken down so small they are invisible to the naked eye), in another because the particles of each substance are attracted to each other.

19. This is what happens when sugar is dissolved in water.
The Particle Theory
This is what happens when sugar is dissolved in water.
The water particles are attracted to the sugar particles, making them dissolve.

20. They mix to form a solution.
The Particle Theory
In scientific terms, the sugar in this picture is the solute, (substance being dissolved) and the water is the solvent.
They mix to form a solution.

21. The Particle Theory
Solutes and solvents may take the form any of the three states of matter: gas liquid or solid.

22. The Particle Theory
This solution of water (solvent) and sugar (solute) is a homogeneous solution.
Water is often called the universal solvent because it can dissolve many particles.

23. The Particle Theory
A solution only forms when particles are attracted to each other, and the solute dissolves in the solvent.

24. The Particle Theory
A solution is said to be a homogeneous solution when the mixture of two substances look the same throughout; the individual particles cannot be seen.

25. The Particle Theory
When different parts of a mixture can be seen, it is called a heterogeneous or mechanical mixture.
Concrete is a mechanical mixture because its individual components can be seen.

26. This is because the particles are not attracted to each other.
The Particle Theory
When one substance will not dissolve in another, the substance is said to be insoluble.
This is because the particles are not attracted to each other.
Oil and Water

27. Oil and water result in a mechanical or heterogeneous mixture.
The Particle Theory
Oil and water result in a mechanical or heterogeneous mixture.
The particles in each substance are not attracted to each other and therefore separate.
Oil and Water

28. It can explain why grass stains are difficult to get out of clothing.
The Particle Theory
The idea of particle attraction applies to many other combinations of substances.
It can explain why grass stains are difficult to get out of clothing.

29. Grass stains are caused by chlorophyll in the grass.
The Particle Theory
Grass stains are caused by chlorophyll in the grass.

30. Particles of chlorophyll are more attracted to each other than water.
The Particle Theory
Particles of chlorophyll are more attracted to each other than water.
Chlorophyll is insoluble in water (universal solvent), but will dissolve in other solvents such as rubbing alcohol.