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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.

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Method of Initial Rates

Method of determining the rate-law expression by carrying out a reaction with different initial concentrations and analyzing the resultant changes in initial rates.

Catenation

Bonding of atoms of the same element into chains or rings.
The bonding together of atoms of the same element to form chains.
The ability of an element to bond to itself.

Ternary Acid

A ternary compound containing H, O, and another element, often a nonmetal.

Endothermic

Describes processes that absorb heat energy.

Periodicity

Regular periodic variations of properties of elements with atomic number (and position in the periodic table).

Electrical Conductivity

Ability to conduct electricity.

Heat

A form of energy that flows between two samples of matter because of their differences in temperature.

Ferromagnetism

The ability of a substance to become permanently magnetized by exposure to an external magnetic field.

Bonding Pair

Pair of electrons involved in a covalent bond.

Solubility Product Constant

Equilibrium constant that applies to the dissolution of a slightly soluble compound.