Unit 3Exam Review

Made by Ms. Manhart’s classes

SolutionsSolvent & Solute

Gabriela and Brianna

DefinitionsSolutions: They are the best mixed mixtures.

They have the smallest particles. They stay suspended and they are clear (see through).

Solute: Is the part that gets dissolved and could be more than one substance in a mixture.

Solvent: Is the greatest amount and does the dissolving.

Solution: Salt WaterSolvent: Water Solute: Salt

Kool AidSolvent: Water Solute: Powder

LemonadeSolvent: Water

Solute: Sugar and Lemon Juice

Hot ChocolateSolvent: Milk Solute: Chocolate Powder

Crystal LightSolvent: Water Solute: Powder

Colloids vs. Suspensions

By Brianna M. and Gwen D.

Colloids

• A mixture with medium particles that you can see with a microscope. The particles are suspended within the substance. The substance is translucent and it scatters light.

• Example: Fog or Smoke

Suspension

• A mixture with large particles that are visible to the bare eye. The particles settle to the bottom and are opaque.

• Example: Sand in water, snow globes or salad dressing

Fog- Colloid

Milk- Colloid

Smoke- Colloid

Sand in water- Suspension

Snow Globes- Suspension

Salad Dressing- Suspension

Colloids vs. Suspensions

Colloid

A mixture containing small, undissolved particles that do not settle out.

suspension

A mixture in which particles can be seen, and easily separated by settling or filtration.

Example 1

Salt water is an example of a suspension.

The salt particles will eventually settle to the bottom.

Example 2

Salad dressing is an example of a suspension.

This is because a the particles with a higher density fal to the bottom

Example 3

Milk

This is because the substances in milk will not settle out, and cannot be filtered out.

Solute

s and S

olve

nts

(sol

utions)

By:Josey, Alex and Cecilla

The solution song

http://www.youtube.com/watch?v=3G472AA3SEs

Solutes

Solutes:The substance that gets disolved.

They are things that are soluble!

Examples of Solutes

Examples: Lemonade and Water

The lemonade powder is what is being dissolved. The water is doing the dissolving because when the powder is all gone the mixture becomes LEMONADE!

examples OF SOLutes

Example: Sugar and Water

Sugar is an example of a solute because sugar is what gets dissolved in water.

Examples of Solutes

Example: Milk and Hot chocolate

When you mix hot chocolate powder with warm milk you create HOT CHOCOLATE!

solvents

Solvent:Largest part of a solution: does the disolving.

EXAMPLES OF SOLVENT THIS DOES THE DESSOLVING

Homogeneous vs. Heterogeneous

• Heterogeneous: You can see the different parts of the substance. Can only be a mixture.

• Homogeneous: You can’t see any different parts of the substance. Can be either a mixture or a compound.

Homogeneous Examples

Heterogeneous Examples

Colloids, Suspension, or Solution

By Aiden and Aliea

Colloids

• Medium sized particles• Cant see individual particles• Particles stay suspended • Translucent-allows light to pass through but

disrupts images.

Fog

Milk

Shaving Cream

Smoke

jello

Suspension

• Large sized particles• Can see particles easily• Particles settle to the bottom of mixture• Cannot see through them•

Muddy Water

Snow Globe

Salad Dressing

Solar System

Dust

Solution

• Small sized particles • Cannot see individual particles • Particles stay suspended • Homogeneous

Sugar Water

Salt Water

Peach Juice

Test ReviewTest ReviewWoo who!!!!!!!!?!!!Woo who!!!!!!!!?!!!

Chemical and Physical ChangesChemical and Physical Changes

Physical changes Physical changes and Chemical and Chemical

changes.changes.A physical change is any change that A physical change is any change that changes the appearance but not the changes the appearance but not the chemical composition.chemical composition.

A chemical change is a change in matter A chemical change is a change in matter that makes one or more new that makes one or more new substances.substances.

Physical ChangePhysical ChangeAdd food coloring to water.Add food coloring to water.

Physical ChangePhysical ChangeCutting a cucumber.Cutting a cucumber.

Physical ChangePhysical Change• Melting butter.Melting butter.

Chemical ChangeChemical Change• Burning a log.Burning a log.