Mixtures

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!

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

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!

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

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

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.

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

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.