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The scattering of light by colloidal particles.

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Fossil Fuels

Substances consisting largely of hydrocarbons, derived from decay of organic materials under geological conditions of high pressure and temperature (metamorphism) include coal, petroleum, natural gas, peat and oil shale.  For further information see Fuel Chemistry

Amphoterism

The ability to react with both acids and bases.Ability of substance to act as either an acid or a base.

Polarization

The buildup of a product of oxidation or a reduction of an electrode, preventing further reaction.

Nuclide Symbol

Symbol for an atom A/Z E, in which E is the symbol of an element, Z is its atomic number, and A is its mass number.

Metallic Conduction

Conduction of electrical current through a metal or along a metallic surface.

Isotopes

Two or more forms of atoms of the same element with different masses, atoms containing the same number of protons but different numbers of neutrons.

Dispersing Medium

The solvent-like phase in a colloid.

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.

Polymorphous

Refers to substances that crystallize in more than one crystalline arrangement.

Liquid Aerosol

Colloidal suspension of liquid in gas.