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A cluster of atoms in a ferromagnetic substance, all of which align in the same direction in the presence of an external magnetic field.

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Chemical Kinetics

The study of rates and mechanisms of chemical reactions and of the factors on which they depend.

Coulometry

The quantitative application of Faraday's Law to the analysis of materials. The current and time are the usual variables measured.

Forbidden Zone

A relatively large energy separation between an insulator's highest filled electron energy band and the next higher energy vacant band. Beginning in the fourth energy level, a set of seven degenerate orbitals per energy level, higher in energy than s, p, and d orbitals of the same energy level.

Mass

A measure of the amount of matter in an object. Mass is usually measured in grams or kilograms.

Net Ionic Equation

Equation that results from canceling spectator ions and eliminating brackets from a total ionic equation.

Matter

Anything that has mass and occupies space.

Ionic Bonding

Chemical bonding resulting from the transfer of one or more electrons from one atom or a group of atoms to another.

Mass Number

The sum of the numbers of protons and neutrons in an atom, an integer.

xylose

A colorless, crystalline pentose sugar, C5H10O5, derived from xylan, straw, corncobs, etc., by treating with heated dilute sulfuric acid, and dehydrating to furfural if stronger acid is used.

Coordination Number

In describing crystals, the number of nearest neighbours of an atom or ion. The number of donor atoms coordinated to a metal.