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The ratio of the change in length or volumen of a body to the original lengthor volume for a unit change in temperature.

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Safranine

Also called "phenosafranine". A purplish-red, water-soluble dye, C18H14N4, used for textiles and as a stain in microscopy.

Polarization

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

Composition Stoichiometry

Descibes the quantitative (mass) relationships among elements in compounds.

Alkylbenzene

A compound containing an alkyl group bonded to a benzene ring.

Gangue

Sand, rock, and other impurities surrounding the mineral of interest in an ore.

Voltaic Cells

Electrochemical cells in which spontaneous chemical reactions produce electricity, also called galvanic cells.

 

Nitrogen Cycle

The complex series of reactions by which nitrogen is slowly but continually recycled in the atmosphere, lithosphere and hydrosphere.

 

Nernst Equation

Corrects standard electrode potentials for nonstandard conditions.

Coordination Number

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

Oxide

A binary compound of oxygen.