Warm-UpIn your own words, define the

word mixture.

Solution ChemistryA Closer Look a Mixtures

SolutionsHomogeneous mixture

of two or more substances in a single phase

Two components◦ Solute- the substance

being dissolved◦ Solvent- the substance

doing the dissolvingCan be a mixture of

solids, liquids, and gases◦ Ex- air, brass, salt water

SuspensionA mixture in which

the solute particles are so large, the eventually settle out unless the mixture is constantly stirred◦ Particles larger than

1000nm in diameterParticles can be

separated using filter paper

Ex- muddy water

ColloidMixtures with

solute particles between 1 and 1000nm in diameter

Particles able to remain suspended throughout the solvent

Ex- milk, smoke, gelatin, foams

How can we tell them apart?Suspensions will eventually settle

outFor solutions and colloids, we can

refer to the Tyndall Effect◦If we shine a light on a mixture, and

the light does not scatter, it is a solution

◦If the light does scatter, it is a colloid.

Types of SolutesElectrolyte- A substance that

dissolves in water to give a solution that conducts electric current

Nonelectrolyte- A substance that dissolves in water to give a solution that does not conduct an electric current

Three Categories of SolutionsUnsaturated solution- A solution that

contains the less than the maximum amount of dissolved solute

Saturated solution- A solution that contains the maximum amount of dissolved solute

Supersaturated solution- A solution that contains more than the maximum amount of dissolved solute

Exit Ticket: To be Turned inExplain the difference between a

solution, suspension, and a colloid. Explain how we can tell them apart.