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Refers to crystals having the same atomic arrangement.

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Carbanion

An organic ion carrying a negative charge on a carbon atom.

Faraday's Law of Electrolysis

One equivalent weight of a substance is produced at each electrode during the passage of 96,487 coulombs of charge through an electrolytic cell.

Stoichiometry

Description of the quantitative relationships among elements and compounds as they undergo chemical changes.

Rate-determining Step

The slowest step in a mechanism, the step that determines the overall rate of reaction.

Alums

Hydrated sulfates of the general formula M+M3+(SO4)2.12H2).

Contact Process

Industrial process by which sulfur trioxide and sulfuric acid are produced from sulfur dioxide.

Thermodynamics

The study of the energy transfers accompanying physical and chemical processes.

Lanthanide Contraction

A decrease in the radii of the elements following the lanthanides compared to what would be expected if there were no f-transition metals.

Nonpolar Bond

Covalent bond in which electron density is symmetrically distributed.

Radioactive Tracer

A small amount of radioisotope replacing a nonradioactive isotope of the element in a compound whose path (for example, in the body) or whose decomposition products are to be monitored by detection of radioctivity, also called a radioactive label.