Science Unit A: Section 2.0 Flashcards
What is a mixture?
A mixture that has 2 or more substances
Ex. Soul
What is a mechanical or heterogenous mixture?
When you can see the different parts of a mixture
What is a solution or a homogenous mixture?
When you can’t see the different substances
What is a suspension?
A heterogenous mixture where the to substances float
What is a colloid?
A heterogenous mixture that needs an emulsion or else the particles will set because they are not bonded together
What is a paper chromatography test for?
A paper chromatography test can be used to determine if they are pure substances or solutions
What is the solute?
The substance that dissolves
What is the solvent?
The substance that does the dissolving
What is concentration?
It tells you the amount of solute dissolved in a specific amount of solvent
What is an unsaturated solution?
When a solute can still dissolve
What is a saturated solution?
When no more solute can dissolve
What is solubility?
The maximum amount of solute you can add to a fixed volume of solvent
What is an aqueous solution?
It means that the solvent is water
The solubility of solids and liquids increases as the…?
Temperature of the solvent increases
The solubility of a gas…?
Decreases as the temperature increases
The chart?
Matter
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Mixtures P.S
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Mechanical mixtures
Ex. Soul
Solution
Ex. Vinegar
Suspensions
Ex. Tomato juice
Colloids
Ex milkWhat are the for parts to the particle model of matter?
- All matter is made of tiny particles
- The tiny particles are always moving
- The particles may be attracted or bonded together
- The particles have spaces between them
What factors affect the rate of dissolving?
- Temperature of the solvent
- size of the pieces- because they have more surface area for the particles to bump into
- Stirring so the particles bump into each other
What is a pure substance?
A substance that is made of one type of matter
Ex. Tinfoil
Why do substances dissolve?
Some particles may be more attracted to each other
