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NYS Chemistry Regents

Vapor Pressure the pressure a liquid exerts on its surface, as it tries to become a gas.
Parts per million (PPM) grams solute/grams solution x 1,000,000
Saturated solution that has as much solute dissolved as is possible for given conditions
Supersatured solution that has more solute dissolved than should be possible at given temp and pressure.
Unsaturated solution that can still have more solute dissolved in it at given conditions.
Boiling point elevation & Freezing point depression Changes in the physical properties of a solution containing a nonvolatile solute. As concentration increases, so does the effect on BP
Electrolyte a solution that conducts electricity because it has charges that can move around. Acids, bases and salts solutions.
Miscible two liquids can make a non-layered (homogeneous) mixture. They’re Mixable!
Solute The substance that gets dissolved when making a solution. (present in smaller amount)
Solvent the chemical that “does the dissolving” the “dissolver” (present in greater amount)
Nonelectrolyte a solution that does NOT conduct electricity because it doesn’t have any charges that can move around.
Immiscible two liquids that cannot mix together. Will always be heterogeneous.
Concentration A measure of how strong a solution is. Calculation by dividing the amount of solute by the amount of solvent. Can be Molarity, PPM, or percent.
Dilute A general term for a concentration that is weak. As a verb, it means to add water to lower the concentration.
Colligative Properties Characteristics of a Solution that depend on the nature and amount of solute dissolved. Vapor pressure reduction, FP depression and BP Elevation are examples.
Dissolution (dissolving) 3 step process: 1. breaking old solute attractions; 2. breaking solvent attractions; 3. solvation
Created by: etucci