1. Ch. 2.2 Mixtures

2. Classifying Mixtures
Mixture—a physical blend of two or more components.
Mixtures are classified as either heterogeneous or homogeneous, depending on the distribution of their components.

3. Heterogeneous Mixture
A mixture in which the distribution is not uniform throughout.

4. Homogeneous Mixture
A mixture in which the composition is uniform throughout.
Phase—any part of a mixture with uniform composition and properties. Heterogeneous mixtures have two or more phases; homogeneous mixtures have just one.

5. Separating Mixtures
Differences in physical properties can be used to separate mixtures.
Filtration—the process that separates solids from the liquid in a heterogeneous mixture.
Distillation—process used to separate substances that are dissolved in a liquid.