CHAPTER 12

SOLUTIONS

Types of Mixtures

12.1

12.1

12.1

Mixtures are classified into two types.What are they?

12.1

Mixtures are classified into two types.Heterogeneous -

12.1

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

compositionWhat are the two types of

heterogeneous mixtures?

12.1

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

composition1. Suspension

12.1

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

composition1. Suspension

Large particles which can be caught by a filter Particles settle out upon standing May show the Tyndall Effect

12.1

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

composition1. 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

12.1

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

composition2. 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

12.1

Mixtures are classified into two types.Homogeneous – having a uniform

composition with very small particles (solutions)

12.1

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

12.1

Solutions:Solute –

Solvent –

Electrolyte –

Nonelectrolyte -

12.1Solutions: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

12.1

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

12.1

What do the red and white molecules represent?

12.1

What do the white and green balls represent?

12.1

When does dissolving end?

12.1

What could speed up the dissolving process?

12.1

Covalent compounds dissolve differently than ionic compounds.