Solutions (= homogeneous mixtures)

The two components of a mixture:1. solute (the substance being dissolved)2. solvent (the medium that dissolves the

solute)

Solutions (= homogeneous mixtures)Salt water is the classic example of a solution:

Solutions don’t have to be liquid:

Colloid Suspensions Produce the Tyndall Effect:

Suspension: Particles in a mixture are so large that they settle out (e.g., Italian S.D.)

Solution: Particles are so small that they are uniformly dispersed in a single phase (e.g., air, soft drink)

Colloids: Particles of intermediate size between

suspension & solution; don’t settle out but interfere with light passing through

Solutes: Categories base on electrical conductivity (electricity is essentially the flow of electrons)• Electrolytes:• Conduct electricity when dissolved in water.• ionic compounds (ions can carry charge)

• Nonelectrolytes:• Do not conduct electricity when dissolved in

water• molecules