Glossary of Abeka Chemistry Flashcards for Chapter 12

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The attraction of a substance to the surface of a solid (12.5)
Brownian motion
The random movement of colloidal particles (12.5)
Colligative property
Any property THAT DEPENDS on the number of particles NOT the identity or properties of the particles. (12.4)
Colloidal dispersion (colloid)
A mixture containing tiny clumps or particles that remain suspended in a mixture. (12.5)
An expression of the amount of solute present in a given amount of solution (or solvent). (12.3)
The deposition of solute particles from the solution on the surfaces of undissolved solute cystals. (12.2)
The separtion of ions from each other that occurs when they are solvated. (12.1)
Compounds that dissolve in water to produce ions which can conduct an electrical current. (12.4)
Henry's Law
At a given temp., the equilibrium concentration of a dissolved gas is directly proportional to the partial pressure of that gas. (12.2)
A term describing an ion (or molecule) surrounded by water molecules (12.1)
A term describing two liquids which are not soluble in each other to any significant extent. (12.1)
The separation of molecules into ions in solution. (12.1)
A tiny spherically shaped emulsified droplet. (12.5)
A term describing two liquids which are completely soluble in each other in all proportions. (12.1)
The number of moles of wolute per kilogram of solvent. (12.3)
Molarity (molar concentration)
The number of moles of solute per liter of solution. (12.3)
Substances that do not ionize or dissociate in aqueous solutions to produce ions which an conduct an electrical current. (12.4)
The flow of solvent through a semipermeable membrane from the less concentrated to the more concentrated solution. (12.4)
Saturated solution
A solution that contains ALL the solute possible under equilibrium conditions at a given temperature. (12.2)
Semipermeable membranes
Substances which permit the passage of some molecules but not others. (12.4)
Examples of semipermeable membranes.
Cellophane, parchment, polyvinyl chloride, skin, biological membranes (12.4)
Examples of a colligative property
vapor pressure lowering, freezing point depression or boiling point elevation (12.4)
The amount of solute present in a saturated solution. (12.2)
The substance that is dissolved. (12.1)
A homogeneous mixture of two or more substances. (12.1)
Solution equilibrium
The condition in which the rate of dissolution equals the rate of crystallization; a type of dynamic equlibrium. (12.2)
A term describing an ion (or molecule) surrounded by any type of solvent molecules. (12.1)
Solvation (hydration)
The process in which solvate moledules or ions are surrounded by solvent (water) molecules. (12.1)
The substance that does the dissolving. (12.1)
A term used to describe a solution that contains more solute that it could under equlibrium conditions. (12.2)
Tyndall effect
Visible scattering of light along the path of a beam of light as it passes through a colloid. (12.5)
A term used to dscribe a solution that contains less solute than it could at equilibrium at a specific temperature. (12.2)
Vapor pressure
The pressure exerted by the molecules of a gas in the vapor state (12.4)

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