SOLUTIONS

Types of Mixtures

Mixtures are classified into two types. What are they?

Mixtures are classified into two types. Heterogeneous -

Mixtures are classified into two types. Heterogeneous – not having a uniform composition What are the two types of heterogeneous mixtures?

Mixtures are classified into two types. Heterogeneous – not having a uniform composition 1. Suspension

Mixtures are classified into two types. Heterogeneous – not having a uniform composition 1. Suspension  Large particles which can be caught by a filter  Particles settle out upon standing  May show the Tyndall Effect

Mixtures are classified into two types. Heterogeneous – not having a uniform composition 1. Suspension  Large particles which can be caught by a filter  Particles settle out upon standing  May show the Tyndall Effect  Examples – Italian salad dressing, concrete, orange juice

Mixtures are classified into two types. Heterogeneous – not having a uniform composition 2. Colloid Intermediate sized particles which are not caught by a filter Particles do not settle out upon standing Does show the Tyndall Effect Examples – fog, milk, whipped cream, butter

Mixtures are classified into two types. Homogeneous – having a uniform composition with very small particles (solutions)

Mixtures are classified into two types. Homogeneous – having a uniform composition with very small particles (solutions)  Particles will not be caught by a filter  Particles do not settle out upon standing  Does not show the Tyndall effect  Examples – soda, bronze, air, tap water, sterling silver

Solutions: Solute – Solvent – Electrolyte – Nonelectrolyte -

Solutions: Solute – substance that gets dissolved, usually found in the smaller amount Solvent – substance that does the dissolving, usually found in the larger amount Electrolyte – aqueous solution composed of ions, will conduct electricity Nonelectrolyte – aqueous solution not composed of ions, will not conduct electricity

If you could look at one NaCl particle, what would it look like when it dissolves in water?

What do the red and white molecules represent?

What do the white and green balls represent?

When does dissolving end?

What could speed up the dissolving process?

Covalent compounds dissolve differently than ionic compounds.