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Science - Unit 1 - Topic 2
Mixing and Dissolving
19
Science
8th Grade
11/19/2017

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Cards

Term
What is the universal solvent and why?
Definition
Water because many things are able to dissolve in it.
Term
What is a pure substance?
Definition
A substance with only one type of particle.
Term
What is a mixture?
Definition
A substance with more than one type of particle
Term
Homogenous
Definition
A substance with two or more phases that you can not see both parts. The particles are intermingled
Term
Heterogenous
Definition
A substance with two or more phases that you can see both parts.
Term
What kind of mixture is milk
Definition
homogenous
Term
What kind of mixture is hotsauce
Definition
heterogenous
Term
Suspension
Definition
When the particles slowly settle/separate
Term
Colloid
Definition
When the particles do not settle/separate
Term
Emulsion
Definition
A mixture is prevented from joining by an emulsifying agent
Term
Why does sugar dissolve in water?
Definition
Sugar is a solute and water is a solvent. The sugar particles are more attracted to the water particles than to themselves. The water works its way in and pulls apart the sugar particles.
Term
What is the solute and solvent for
Ocean water
Iced tea (made from powder)
Definition
Solvent Solute
Water Salt
Water Iced Tea Powder
Term
What can you do to speed up a solute dissolving in a solvent
Definition
You can agitate, break it up, or change the temperature of the solution to help it dissolve faster.
Term
Unsaturated solution
Definition
more solute will dissolve in the solvent at a specific temperature
Term
Saturated solution
Definition
no more solute will dissolve in the solvent at the same temperature
Term
Supersaturated solution
Definition
there is too much solute for the solvent to dissolve at that specific temperature so it is heated to dissolve more solute.
Term
Solution
Definition
A homogenous mixture with two or more substances
Term
Solute
Definition
A substance that dissolves in a solvent
Term
Solvent
Definition
A substance that dissolves a solute
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