1. Mixtures

2. What is a Mixture?
Mixture – When 2 or more substances are mixed or “junked” together.
The substances are NOT chemically combined in a mixture!
A mixture is a physical change.
Mixtures can be separated!

3. Heterogeneous Mixtures
Heterogeneous Mixture – A mixture that is unevenly distributed
*The parts can be seen and look different!
Examples: Chex Mix, Iced tea, Salad

4. Homogeneous Mixtures
Homogeneous Mixture – A mixture that is evenly distributed.
*The parts cannot be seen & look the same!
Examples: Lemonade, Milk, Kool-Aid
Also called a Solution!

5. What is a Solution?
Solution: A mixture that forms when one substance dissolves another.
Solution = Solute + Solvent
Lemonade = Lemon Juice & Sugar Water

6. Solvent: A substance that dissolves another substance.
Example:
Water
Solute:
The substance being dissolved. The solute is dissolved by the solvent.
Examples:
Salt, Sugar, Lemon Juice, Alka-Seltzer, Kool-Aid powder

7. Saturated Solution: A mixture that contains as much dissolved solute as possible at a given temperature.
Solutions can reach their Saturation Point, where no more of the solute can be dissolved.

8. What if a solute does not dissolve in water?
Insoluble: When one substance can not dissolve into another substance.
Examples:
Oil, Sand,
Baby Powder

9. Homogeneous vs. Heterogeneous
Complete the Venn Diagram comparing the Homogeneous and Heterogeneous
How are they alike? (2 ways)
How are they different? (2 ways)
Give 3 examples and 3 pictures for each type.