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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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Compressed Gas

A gas or mixture of gases having, in a container an absolute pressure exceeding 40 psi at 21.1°C (70°F)

Alkynes

Unsaturated hydrocarbons that contain one or more carbon-carbon triple bonds.

Central Atom

An atom in a molecule or polyatomic ion that is bonded to more than one other atom.

Spectator Ions

Ions in a solution that do not participate in a chemical reaction.

Frasch Process

Method by which elemental sulfur is mined or extracted. Sulfur is melted with superheated water (at 170°C under high pressure) and forced to the surface of the earth as a slurry.

 

Chain Reaction

A reaction that, once initiated, sustains itself and expands. This is a reaction in which reactive species, such as radicals, are produced in more than one step. These reactive species, radicals, propagate the chain reaction.

 

Electron Deficient Compounds

Compounds that contain at least one atom (other than H) that shares fewer than eight electrons.

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.

Alkylbenzene

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

Polydentate

Refers to ligands with more than one donor atom.