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A binary compound of oxygen.

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Free Energy Change

The indicator of spontaneity of a process at constnt T and P. If delta-G is negative, the process is spontaneous.

Alkyl Group

A group of atoms derived from an alkane by the removal of one hydrogen atom.

Alcohol

Hydrocarbon derivative containing an --OH group attached to a carbon atom not in an aromatic ring. Alcohols are a class of organic compounds containing the hydroxyl group, OH, attached to a carbon atom.

Total Ionic Equation

Equation for a chemical reaction written to show the predominant form of all species in aqueous solution or in contact with water.

Supercritical Fluid

A substance at temperature above its critical temperature.

Oxidation Numbers

Arbitrary numbers that can be used as mechanical aids in writing formulas and balancing equations, for single- atom ions they correspond to the charge on the ion, more electronegative atoms are assigned negative oxidation numbers (also called Oxidation states).

Tyndall Effect

The scattering of light by colloidal particles.

Leclanche Cell

A common type of dry cell.

Limiting Reactant

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

xenon trioxide

A colorless, nonvolatile solid, XeO3, explosive when dry: in solution it is called xenic acid.