Solutions

Types of Mixtures

Objectives

1. Distinguish between hetergeneous and homogeneous mixtures.

2. List different solute-solvent combinations.

3. Compare the properties of solutions, suspensions, and colloids.

Types of Mixtures

Solutions• Solution –

homogeneous mixture of two or more substances in a single phase; even distribution of particles

• Soluble – able to be dissolved .

Components of SolutionsSolute – substance that

dissolves

Solvent – the dissolving medium

Types of SolutionsSolute Solvent Example

Gas Gas Air

Gas Liquid Soda

Gas Solid Methane hydrates

Liquid Gas

Liquid Liquid Vinegar

Liquid Solid Dental fillings

Solid Gas

Solid Liquid Saltwater

Solid solid alloys

Suspensions and ColloidsSuspension – mixture with large (> 1000 nm) solute

particle sizes; particles settle out over time.

Examples: paint, muddy water

Colloid – mixture with intermediate solute particle sizes (between 1 -1000 nm); particles remain dispersed over time

Examples: aerosols, foam, mayonaisse