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DCE Chem Unit 9

DCE Chemistry Unit 9 Vocabulary

TermDefinition
solution a homogeneous mixture that will not separate
suspension a mixture in which some of the particles settle out slowly upon standing
solute the dissolved particles in a solution; the part of the solution smaller in amount
solvent the dissolving medium in a solution; the part of the solution larger in amount
mixture a blend of two or more substances that are not chemically combined
alloy a mixture of two or more elements, at least one of which is a metal
emulsion a nonpolar substance held in suspension in a polar substance by a molecule that has both a polar and nonpolar end
electrolyte a solution that will conduct electricity
non-electrolyte a substance that will not conduct electricity when put in solution because it does not form ions
surfactant a substance that interferes with the hydrogen bonding between water molecules and reduces surface tension
homogeneous mixture a mixture that is uniform in composition, mixed evenly throughout
heterogeneous mixture a mixture that is not uniform in composition, not mixed evenly throughout
miscible two liquids that dissolve in each other in all proportions
immiscible two liquids that do not dissolve in each other
solubility the amount of substance that will dissolve in a given amount of solute at a specific temperature and pressure
insoluble a substance that will not dissolve in a solute is said to be _________
saponifiation the process of making soap
saturated solution a solution in which the maximum amount of solute that can dissolve has been added to the solute
unsaturated solution a solution in which less than the maximum amount of solute that can dissolve has been added to the solute
supersaturated solution a temporary condition in which a solution contains more solute than the standard amount at a given temperature
colligative properties properties that depend only upon the number of solute particles present
freezing point depresssion the difference in temperature between the freezing point of the pure solvent and the freezing point of the solution (the solution will be lower)
colloid a heterogeneous mixture that will not settle out when you stop stirring it
molarity a measurement of the concentration of a solution (moles of solute per liter of solution)
parts per million a way of expressing very dilute concentrations of substance; one part solute in 1 million parts of the solution
molality a measurement of the concentration of a solution (moles of solute per kilogram of solvent)
percent by weight a measurement of the concentration of a component in a mixture; the mass of a component divided by the total mass of the mixture, multiplied by 100%.
boiling point elevation the difference in temperature between the boiling point of the pure solvent and the boiling point of the solution (the solution will be higher)
concentration a measure of the amount of solute that is dissolved in a given quantity of solvent
aqueous solution a solution made by dissolving a solute in water
soluble a substance that will dissolve in a solute is said to be _________
Created by: dcechem