SolutionsSolutions

Double, Double, Toil, and Double, Double, Toil, and Trouble…Trouble…

Kool Aid drinks are solutionsKool Aid drinks are solutions Solutions are homogenous mixtures of two or Solutions are homogenous mixtures of two or

more pure substances in a single phasemore pure substances in a single phase Contains a solvent and soluteContains a solvent and solute

Solvent: dissolving medium (water)Solvent: dissolving medium (water) Solute: dissolved substance (salt)Solute: dissolved substance (salt)

Particle sizes are the smallestParticle sizes are the smallest Will not separate while standingWill not separate while standing Do not filterDo not filter Do not scatter lightDo not scatter light Colligative properties are affectedColligative properties are affected

ElectrolytesElectrolytes

Some substances will conduct electricity Some substances will conduct electricity when dissolved in water...these are called when dissolved in water...these are called electrolytes.electrolytes.

Sodium, Potassium, and Calcium are Sodium, Potassium, and Calcium are electrolytes that are found in most sport electrolytes that are found in most sport drinks.drinks.

Used to transport nerve signals.Used to transport nerve signals.

SolutionsSolutions

Muddy water is a SuspensionMuddy water is a Suspension

Suspensions are heterogeneous mixtures Suspensions are heterogeneous mixtures that have the largest particles of all that have the largest particles of all mixturesmixtures Will separate upon standingWill separate upon standing Can be filteredCan be filtered Do scatter lightDo scatter light Colligative properties are unaffectedColligative properties are unaffected Examples: Muddy water, Cu Lab.Examples: Muddy water, Cu Lab.

SuspensionsSuspensions

Milk/Gelatins are ColloidsMilk/Gelatins are Colloids Colloids are homogeneous mixtures that have Colloids are homogeneous mixtures that have

particles that are medium in size.particles that are medium in size. Particles remain dispersed in liquid due to Particles remain dispersed in liquid due to

random particle motion of surrounding random particle motion of surrounding molecules.molecules. Will separate very slowly or not at allWill separate very slowly or not at all Will not filterWill not filter Will scatter lightWill scatter light Colligative properties are unaffected.Colligative properties are unaffected.

Eggs Are ColloidsEggs Are Colloids

The proteins in the egg white are large The proteins in the egg white are large enough to scatter light, but mix well in enough to scatter light, but mix well in water.water.

This only occurs when the eggs are put This only occurs when the eggs are put into water RAW!!into water RAW!!

I Like Raw EggsI Like Raw Eggs

What is this scattering light?What is this scattering light?

Tyndall EffectTyndall Effect

Light bounces off objects it cannot pass Light bounces off objects it cannot pass through, is scattered by objects, or passes through, is scattered by objects, or passes right through objects.right through objects.

The scattering of light as it passes through The scattering of light as it passes through a transparent medium is called the Tyndall a transparent medium is called the Tyndall Effect.Effect.

When focused light is shined on a When focused light is shined on a homogeneous solution the light will not be homogeneous solution the light will not be scattered; it will pass right through.scattered; it will pass right through.

When focused light is shined on a colloid When focused light is shined on a colloid the light will be scattered and no longer as the light will be scattered and no longer as focused.focused.

What are they?What are they?

Oil and vinegar salad dressing?Oil and vinegar salad dressing? Gelatin?Gelatin? Starch in water?Starch in water? Smoke in air?Smoke in air? Salt in water?Salt in water? Clay in water?Clay in water? Food coloring in water?Food coloring in water?

Carbon dioxide in water?Carbon dioxide in water? Steam in air?Steam in air? Table sugar in water?Table sugar in water? Milk?Milk? Bleach?Bleach? Ammonia?Ammonia? Tea?Tea?