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The substance that reduces another substance and is oxidized.

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Evaporation Rate

The rate at which a particular substance will vapourize (evaporate) when compared to the rate of a known substance such as ethyl ether. This term is especially useful for health and fire-hazard considerations.

Partial Pressure

The pressure exerted by one gas in a mixture of gases.

Explosive limits

The range of concentrations over which a flammable vapour mixed with proper ratios of air will ignite or explode if a source of ignitions is provided.

Electrophile

Positively charged or electron-deficient.

Composition Stoichiometry

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

Percent Composition

The mass percent of each element in a compound.

Ionization Energy

The minimum amount of energy required to remove the most loosely held electron of an isolated gaseous atom or ion.

Nernst Equation

Corrects standard electrode potentials for nonstandard conditions.

Coordination Compound or Complex

A compound containing coordinate covalent bonds.

Phenol

Hydrocarbon derivative containing an [OH] group bound to an aromatic raing.