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A substance that conducts electricity poorly in a dilute aqueous solution.

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PseudobinaryIonic Compounds

Compounds that contain more than two elements but are named like binary compounds.

Equilibrium Constant

A quantity that characterizes the position of equilibrium for a reversible reaction, its magnitude is equal to the mass action expression at equilibrium. K varies with temperature.

Corrosion

Oxidation of metals in the presence of air and moisture.

Flash Point

The temperature at which a liquid will yield enough flamable vapour to ignite. There are various recognized industrial testing methods, therefore the method used must be stated.

Active Metal

Metal with low ionization energy that loses electrons readily to form cations.

Avogadro's Law

At the same temperature and pressure, equal volumes of all gases contain the same number of molecules.

Deposition

The direct solidification of a vapor by cooling, the reverse of sublimation.

Specific Rate Constant

An experimentally determined (proportionality) constant, which is different for different reactions and which changes only with temperature, k in the rate-law expression: Rate = k [A] x [B]v.

Nuclear Reaction

Involves a change in the composition of a nucleus and can evolve or absorb an extraordinarily large amount of energy.

Reaction Quotient

The mass action expression under any set of conditions (not necessarily equlibrium), its magnitude relative to K determines the direction in which the reaction must occur to establish equilibrium.