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21 Cards in this Set
- Front
- Back
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What is a solution? |
a well-mixed mixture that contains a solvent and at least one solute AND has the same properties throughout; contains solute particles too small to see |
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Define solvent |
part of a solution present in the largest amount |
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Define solute |
substance that is present in a solution in a smaller amount and is dissolved by the solvent |
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What solvent is essential to living things? |
Water |
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Define Colloid |
-a mixture containing small, undissolved particles that do not settle out Example" gelatin -contains larger particles than a solution, but still too small to see, but large enough to scatter light |
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Define Suspension |
-a mixture in which particles can be seen and easily separated by settling or filtration -does not have the same properties throughout -visible particles that are larger than teh particles in solutions or colloids |
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What kind of mixture has the largest particles? |
suspensions |
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Why do solutes seem to disappear when you mix them with a solvent? |
particles of the solute leave each other and become surrounded by particles of the solvent |
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What kind of solution conducts electricity? |
salt water |
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Effects of solutes on solvents |
solutes lower the freezing point and raise the boiling point of a solvent |
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Does salt water have a lower or higher freezing point than pure water? |
lower |
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define dilute solution |
-a mixture that has only a little solute dissolved in a certin amount of solvent
Example: made cranberry raspberry juice
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define concentrated solution |
a mixture that has a lot of solute dissolved in the solvent
Example: cranberry raspberry juice in frozen container |
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measuring concentration |
compare amount of solute to the amount of solvent
solute / solvent |
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how can you change the concentraion of a solution? |
by adding more solute or by adding or removing solvent |
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define solubility |
a measure of how much solute can dissolve in a solvent at a given temperature |
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define saturated solution |
when so much solute that no more dissolves |
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What does the solubility of a substance tell you |
it's characteristic of a property of matter |
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What factors affect solubility? |
pressure, type of solvent, temperature |
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Define supersaturated solution |
more dissolved solute than is predicted by its solubility at the given temperature |
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How does temperature affect the solubility of most solids? |
as temperature increases solubility increases |
