2. Solutions Heterogeneous mixture – mixture that is not uniform throughout Homogeneous mixture – mixture that is uniform throughout suspension - > 1000 nm colloid2 – 1000 nm solution.2 – 2 nm

3. Types of Solutions

4. Characteristics of Solutions The Distribution of particles in a solution is uniform The components of a solution do not separate upon standing A solution cannot be separated into its components by filtration For any given solute and solvent, the concentrations can vary Solutions are usually transparent Solutions can be separated into pure components

5. Saturated Solution A solution containing the maximum amount of dissolved solute at equilibrium.

6. Supersaturated Solution contains a greater than equilibrium amount of solute

7. Solubility The amount of solute needed to form a saturated solution

8. Temperature Effects on Solids Temperature does effect solubility but it is unpredictable

9. Temperature Effects on Gases Decreases Increased temperature Decreases Solubility of gases

10. Pressure effects No effect on solids Great effect on gases – More Pressure More Gas Dissolves