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Liquids that, when cooled, apparently solidify but actually continue to flow very slowly under the influence of gravity e.g glass.

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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.

Le Chatelier's Principle

States that a system at equilibrium, or striving to attain equilibrium, responds in such a way as to counteract any stress placed upon it.
If a stress (change of conditions) is applied to a system at equilibrium, the system shifts in the direction that reduces stress.

Half-Cell

Compartment in which the oxidation or reduction half-reaction occurs in a voltaic cell.

Thermal Cracking

Decomposition by heating a substance in the presence of a catalyst and in the absence of air.

 

Conjugated Double Bonds

Double bonds that are separated from each other by one single bond -C=C-C=C-.

Effective Molality

The sum of the molalities of all solute particles in a solution.

Monoprotic Acid

Acid that can form only one hydronium ion per molecule, may be strong or weak. Acid that contains one ionizable hydrogen atom per formula unit.

Dextrorotatory

Refers to an optically active substance that rotates the plane of plane polarized light clockwise, also called dextro.

Flux

A substance added to react with the charge, or a product of its reduction, in metallurgy, usually added to lower a melting point.

Molecular Weight

The mass of one molecule of a nonionic substance in atomic mass units.