Ch.15 Vocab

 Boiling Point Elevation
 Temp. Difference between a Solutions Boiling point and pure solvents boiling point
 Brownian Motion
 Jerky, random, rapid movements of colloid particles that results from collisions of particles of the dispersion medium with the dispersed particles
 Colligative Property
 Physical property of a solution that depends on the number, but not identity, of dissolved solute particles, EX: Vapor Pressure Lowering, Boiling Point Elevation, Osmotic Pressure, and Freezing Point Depression
 Colloid
 Hetergeneous mixtures containing particles larger than solution particles but smaller than suspension particles that are categorized according to the phases of their dispersed particles and dispersing mediums
 Concentration
 quantitative measure of the amount of solute in a given amount of solvent or solution
 Freezing Point Depression
 difference in temperature between a solutions freezing point and the freezing point of its pure solvent
 Heat of Solution
 overall energy change that occurs during the solution formation process
 Henry’s Law
 states that at a given temperature the solutility of a gas in a liquid is directly proportional to the pressure of the gas above the liquid
 Immiscible
 describes 2 liquids that can be mixed together but seperate shortly after you cease mixing them
 Insoluble
 describes a substance that cannot be dissolved in a given solvent
 Miscible
 describes 2 liquids that are soluble in each other
 Molarity
 number of moles of solute dissolved per liter of solution, also known as molar concentration
 Molality
 Ratio of the number of moles of solute dissolved in 1 kilogram of solvent, also known as molal concentration
 Mole Fraction
 ration of the number of moles of solute in solution to the total number of moles of solute and solvent
 Osmosis
 diffusion of solvent particles across a semiperameable membrane from an area of higher solvent concentration to an area of lower solvent concentration
 Solubility
 contains maximum amount of dissolved solute for a given amount of solvent at a specific temperature and pressure
 Osmotic Pressure
 The additional pressure needed to reverse osmosis
 Saturated Solution
 Contains maximum amount of dissolved solute for a given amount of solvent at a specific temperature and pressure
 Soluble
 describes substance that can be dissolved in a given solvent
 Solvation
 process of surrounding solute particles with solvent particles to form a solution; occurs only where and when the solute and solvent particles come in contact with each other
 Supersaturated Solution
 Contains more dissolved solute than a saturated solution at the same temperature
 Suspension
 a type of heterogeneous mixture whose particles settle out over time and can be separated from the mixture by filtration
 Tyndall Effect
 The scattering of light by colloidal particles
 Unsaturated Solution
 Contains less Dissolved solute for a given temperature and pressure than a saturated solution, has further capacity to hold more solute.
 Vapor Pressure Lowering
 The lowering of vapor pressure of a solvent by the addition of a nonvolatile solute to the solvent
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