Unit 3 Exam Review Made by Ms. Manhart’s classes.
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Transcript of Unit 3 Exam Review Made by Ms. Manhart’s classes.
![Page 1: Unit 3 Exam Review Made by Ms. Manhart’s classes.](https://reader031.fdocuments.in/reader031/viewer/2022032722/56649cf75503460f949c7071/html5/thumbnails/1.jpg)
Unit 3Exam Review
Made by Ms. Manhart’s classes
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SolutionsSolvent & Solute
Gabriela and Brianna
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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.
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Solution: Salt WaterSolvent: Water Solute: Salt
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Kool AidSolvent: Water Solute: Powder
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LemonadeSolvent: Water
Solute: Sugar and Lemon Juice
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Hot ChocolateSolvent: Milk Solute: Chocolate Powder
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Crystal LightSolvent: Water Solute: Powder
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Colloids vs. Suspensions
By Brianna M. and Gwen D.
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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
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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
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Fog- Colloid
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Milk- Colloid
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Smoke- Colloid
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Sand in water- Suspension
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Snow Globes- Suspension
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Salad Dressing- Suspension
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Colloids vs. Suspensions
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Colloid
A mixture containing small, undissolved particles that do not settle out.
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suspension
A mixture in which particles can be seen, and easily separated by settling or filtration.
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Example 1
Salt water is an example of a suspension.
The salt particles will eventually settle to the bottom.
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Example 2
Salad dressing is an example of a suspension.
This is because a the particles with a higher density fal to the bottom
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Example 3
Milk
This is because the substances in milk will not settle out, and cannot be filtered out.
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Solute
s and S
olve
nts
(sol
utions)
By:Josey, Alex and Cecilla
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The solution song
http://www.youtube.com/watch?v=3G472AA3SEs
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Solutes
Solutes:The substance that gets disolved.
They are things that are soluble!
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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!
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examples OF SOLutes
Example: Sugar and Water
Sugar is an example of a solute because sugar is what gets dissolved in water.
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Examples of Solutes
Example: Milk and Hot chocolate
When you mix hot chocolate powder with warm milk you create HOT CHOCOLATE!
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solvents
Solvent:Largest part of a solution: does the disolving.
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EXAMPLES OF SOLVENT THIS DOES THE DESSOLVING
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Homogeneous vs. Heterogeneous
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• 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.
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Homogeneous Examples
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Heterogeneous Examples
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Colloids, Suspension, or Solution
By Aiden and Aliea
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Colloids
• Medium sized particles• Cant see individual particles• Particles stay suspended • Translucent-allows light to pass through but
disrupts images.
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Fog
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Milk
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Shaving Cream
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Smoke
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jello
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Suspension
• Large sized particles• Can see particles easily• Particles settle to the bottom of mixture• Cannot see through them•
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Muddy Water
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Snow Globe
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Salad Dressing
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Solar System
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Dust
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Solution
• Small sized particles • Cannot see individual particles • Particles stay suspended • Homogeneous
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Sugar Water
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Salt Water
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Peach Juice
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Test ReviewTest ReviewWoo who!!!!!!!!?!!!Woo who!!!!!!!!?!!!
Chemical and Physical ChangesChemical and Physical Changes
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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.
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Physical ChangePhysical ChangeAdd food coloring to water.Add food coloring to water.
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Physical ChangePhysical ChangeCutting a cucumber.Cutting a cucumber.
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Physical ChangePhysical Change• Melting butter.Melting butter.
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Chemical ChangeChemical Change• Burning a log.Burning a log.