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A term used to describe molecules and polyatomic ions that have one atom in the center and six atoms at the corners of a octahedron.

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Exothermic

Describes processes that release heat energy.

Half-Reaction

Either the oxidation part or the reduction part of a redox reaction.

Polyene

A compound that contains more than one double bond per molecule.

Radioactive Tracer

A small amount of radioisotope replacing a nonradioactive isotope of the element in a compound whose path (for example, in the body) or whose decomposition products are to be monitored by detection of radioctivity, also called a radioactive label.

Hydrocarbons

Compounds that contain only carbon and hydrogen.

Foam

Colloidal suspension of a gas in a liquid.

Peroxide

A compound containing oxygen in the -1 oxidation state. Metal peroxides contain the peroxide ion, O22

Heat of Condensation

The amount of heat that must be removed from one gram of a vapor at it's condensation point to condense the vapour with no change in temperature.

Limiting Reactant

Substance that stoichiometrically limits the amount of product(s) that can be formed.

Coordinate Covalent Bond

A covalent bond in which both shared electrons are donated by the same atom, a bond between a Lewis base and a Lewis acid.