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A reaction that, once initiated, sustains itself and expands. This is a reaction in which reactive species, such as radicals, are produced in more than one step. These reactive species, radicals, propagate the chain reaction.

 

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Coordination Compound or Complex

A compound containing coordinate covalent bonds.

Denaturation

A process pertaining to a change in structure of a protein form regular to irregular arrangement of the polypeptide chains.

Doublet

Two peaks or bands of about equal intensity appearing close together on a spectrogram.

Buffer Solution

Solution that resists change in pH, contains either a weak acid and a soluble ionic salt of the acid or a weak base and a soluble ionic salt of the base.

Vapor

A gas formed by boiling or evaporating a liquid.

Donor Atom

A ligand atom whose electrons are shared with a Lewis acid.

Magnetic Quantum Number (mc)

Quantum mechanical solution to a wave equation that designates the particular orbital within a given set (s, p, d, f ) in which a electron resides.

Ferromagnetism

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

Binary Acid

A binary compound in which H is bonded to one or more of the more electronegative nonmetals.

Mixture

A sample of matter composed of two or more substances, each of which retains its identity and properties.