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

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Oxidizing Agent

The substance that oxidizes another substance and is reduced.

Law of Conservation of Matter and Energy

The total amount of matter and energy available in the universe is fixed.

Metallurgy

Refers to the overall processes by which metals are extracted from ores.

Biodegradability

The ability of a substance to be broken down into simpler substances by bacteria.

 

Crystal Lattice Energy

Amount of energy that holds a crystal together, the energy change when a mole of solid is formed from its constituent molecules or ions (for ionic compounds) in their gaseous state.

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.

Photochemical Smog

A brownish smog occurring in urban areas receiving large amounts of sunlight, caused by photochemical (light-induced) reactions among nitrogen oxides, hydrocarbons and other components of polluted air that produce photochemical oxidants.

 

Octahedral

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.

Double Salt

Solid consisting of two co-crystallized salts.

 

Band

A series of very closely spaced, nearly continuous molecular orbitals that belong to the crystal as a whole.