1. Pure Substances and Mixtures

2. What is matter? Anything that contains mass AND volume
Matter is made up of tiny particles
How tiny?
In a drop of water, there are ______ particles.
(seventeen hundred billion billion)??

3. Classification of Matter
Pure Substances
Mixtures
Mechanical Mixture
(heterogeneous)
Solutions
(homogeneous)

4. Where do pure substances come from?

5. Where do mixtures come from?
When you have more
than 1 pure substance
mixed together.

6. 2 types of Mixtures: Solutions and Mechanical Mixtures
Solutions: looks and feels as if it
is one substance. No matter where
you look at it, it is exactly the
same
Homogeneous Mixture
Mechanical Mixture: Two or more
substances can be seen and felt.
Different pieces may not be the same.
Heterogeneous Mixture

7. More About Solutions
One substance has mixed completely, or dissolved, into another.
Solutions can be solid, liquid, or gas
The substances that dissolve are called: Solutes
The substances into which they dissolve are called: Solvent
Example: sugar dissolved into water  sugar is the solute and water is the solvent

8. Questions from p.21 a) What is a pure substance?
b) Give an example of a pure substance.
2. Identify the solute and the solvent in Kool-Aid.
3. Describe in your own words the difference between a mechanical mixture and a solution. (Use the terms homogeneous and heterogeneous)
4. Label each of the following as a solution or mechanical mixture:
a) wood b) orange juice c) tap water d) loonie coin
5. Give an example of each of the following types of solutions:
a) liquid in liquid b) solid in solid c) solid in liquid

9. Properties Properties are used to describe matter: Color Odor
Luster - How shiny a substance is.
Malleability - The ability of a substance to be beaten into thin sheets, or able to bend
Ductility - The ability of a substance to be drawn into thin wires.
Conductivity - The ability of a substance to allow the flow of energy or electricity.
Hardness - How easily a substance can be scratched.
Melting/Freezing Point - The temperature at which the solid and liquid phases of a substance are in equilibrium at atmospheric pressure.
Boiling Point - The temperature at which the vapor pressure of a liquid is equal to the pressure on the liquid (generally atmospheric pressure).
Density - The mass of a substance divided by its volume

10. The Particle Theory All matter is made up of tiny particles
All pure substances have their own type of particle, which is different from another pure substance
Particles are always moving
When the temperature (energy) increases, the particles move faster
There is always an attraction between particles.

11. Solids, Liquids and Gases

12. Solids, Liquids and Gases

13. Solids, Liquids and Gases

14. Solids, Liquids and Gases (with particle theory)

15. Solids, Liquids and Gases
Solid Liquid Gas