1. Matter Mixtures Pure Substances Elements Compounds Heterogenous
Homogenous

2. Mixture: Two or more substances that:
1) Are not chemically combined with each other
2) Can be separated by physical means
(ex. filtration).
Substances in a mixture keep their individual properties.

3. Two Categories of Mixtures:
1) Heterogeneous Mixture – the substances of the mixture have visible differences and are not transparent.
Examples: orange juice with pulp, fruit salad, salsa
*** hetero = different ***

4. *** homo = the same or similar ***
Two Categories of Mixtures cont’d:
2) Homogeneous Mixture – the substances have no visible differences and are not transparent.
Examples: tap water, salt water, air, orange juice without pulp, and skim milk.
*** homo = the same or similar ***

5. Is it a Heterogeneous or Homogeneous Mixture?
To determine if a mixture is a homogeneous mixture or heterogeneous mixture we look to see if there are visible differences in the mixture.
Heterogeneous (different) = Visible differences
Homogeneous (same) = No Visible differences

6. Would the following be considered a heterogeneous or homogeneous mixture?
1) water

7. Would the following be considered a heterogeneous or homogeneous solution?
1) water (homogeneous)
2) air

8. Would the following be considered a heterogeneous or homogeneous solution?
1) water (homogeneous)
2) air (homogeneous)
3) vegetable soup

9. Would the following be considered a heterogeneous or homogeneous solution?
1) water (homogeneous)
2) air (homogeneous)
3) vegetable soup (heterogeneous)
4) coffee (with & without milk)

10. Would the following be considered a heterogeneous or homogeneous solution?
1) water (homogeneous)
2) air (homogeneous)
3) vegetable soup (heterogeneous)
4) coffee (with & without milk) (homogeneous)
5) beach sand

11. Would the following be considered a heterogeneous or homogeneous solution?
1) water (homogeneous)
2) air (homogeneous)
3) vegetable soup (heterogeneous)
4) coffee (with & without milk) (homogeneous)
5) beach sand (heterogeneous)
6) salsa

12. Would the following be considered a heterogeneous or homogeneous solution?
1) water (homogeneous)
2) air (homogeneous)
3) vegetable soup (heterogeneous)
4) coffee (with & without milk) (homogeneous)
5) beach sand (heterogeneous)
6) salsa (heterogeneous)

13. Solutions:
- Special kind of mixtures where one substance dissolves in another.
- Solutions are very well mixed so they look the same throughout the mixture.

14. A solution is a homogeneous mixture
Solutions cont’d:
A solution is a homogeneous mixture
It is the best mixed of all mixtures.
A solution has a substance that is dissolved (solute) and a substance that does the dissolving (solvent).

15. Example of a Mixture and a Solution
Sand in Water - Sand sinks to the bottom of a bowl The liquid does not look the same everywhere.

16. A Solution (a special type of mixture)
Sugar in Water - Sugar dissolves and spreads throughout the glass of water. The liquid looks the same everywhere

17. Solute Solvent Solution Solute: the substance being dissolved.
Solvent: the substance that does the dissolving It usually makes up most of the solution.
Solution: solute + solvent
Solute
Solvent
Solution