1. PURE SUBSTANCES AND MIXTURES

3. Pure Substances Only 1 kind of particle throughout
Can be solid, liquid or gas
Can be:
Refined Raw Materials
E.g. Table sugar, aluminum foil
Element e.g. Oxygen, Hydrogen
Compounds
Contain 2 or more elements combined in exact proportions
E.g. Carbon dioxide CO2

4. Mixtures Are made up of ‘mixtures’ of 2 or more pure substances
Can be any combination of solid, liquid or gas
Almost all substances in the world are mixtures
E.g. Coke (water, sugar, CO2)
2 Types of Mixtures: Heterogeneous and Homogeneous

5. Heterogeneous Mixtures “Mechanical Mixtures”
You can see and feel the different particles that make up the mixture
If you took two samples of the same mixture they might not have the same properties
E.g. Chocolate chip cookie

6. Homogeneous Mixtures “Solution”
The particles mix together so well it is hard to notice that it is made up of different particles
Can be mistaken for a pure substance
Properties of the mixture will be the same in any sample
E.g. Kool-Aid

7. Solutions Continued..
In a solution, 1 substances needs to be dissolved in another
Substances that dissolve are called ‘solutes’
Substances that solutes are dissolved into are called ‘solvents’
E.g. Alkaseltzer was the solute and water was the solvent
Can be solid, liquid or gas
E.g. Steel, apple juice, air

8. Game time…..
Using the copy of the flow chart provided… in your table groups classify the following:
Baking powder Trail Mix
Perfume Hydrogen
Soil Sand
Hair Spray Alphaghetti
Salt Pure Water
Ketchup Blueberry Muffin
Sugar Carbon Dioxide
Candle Wax Tap Water
Gravel Iron
Calcium Gold

9. Mixtures Pure Substances Perfume Calcium Baking powder Soil Gravel
Heterogeneous
‘Mechanical
Mixtures’
Homogeneous
‘Solutions’
Elements
Compounds
Perfume
Calcium
Baking powder
Soil
Gravel
Hair Spray
Hydrogen
Salt
Trail Mix
Ketchup
Iron
Sugar
Gold
Sand
Candle Wax
Pure Water
Alphaghetti
Carbon Dioxide
Tap Water
Blueberry Muffin