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A packet of light or electromagnetic radiation, also called quantum of light.

 

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Half-Cell

Compartment in which the oxidation or reduction half-reaction occurs in a voltaic cell.

Colligative Properties

Physical properties of solutions that depend upon the number but not the kind of solute particles present.

Standard Molar Enthalphy of Formation

The amount of heat absorbed in the formation of one mole of a substance in a specified state from its elements in their standard states.

Electrophoresis

A technique for separation of ions by rate and direction of migration in an electric field.

Carcinogen

A substance capable of causing or producing cancer in mammals.

 

Cathodic Protection

Protection of a metal (making ir a cathode) against corrosion by attaching it to a sacrifical anode of a more easily oxidized metal.

Solubility Product Principle

The solubility product constant expression for a slightly soluble compound is the product of the concentrations of the constituent ions, each raised to the power that corresponds to the number of ions in one formula unit.

Heavy Water

Water containing deuterium, a heavy isotope of hydrogen.

Ketone

Compound in which a carbonyl group is bound to two alkyl or two aryl groups, or to one alkyl and one aryl group.

Coulometry

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