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An area that may be used for work with carcinogens, reproductive toxins, or substances that have a high degree of acute toxicity. A designated area may be the entire laboratory, an area of a laboratory, or a device such as a laboratory hood.

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Coke

An impure form of carbon obtained by destructive distillation of coal or petroleum.

Aufbau ('building up') Principle

Describes the order in which electrons fill orbitals in atoms.

Saccharide

An organic compound containing a sugar or sugars.

Donor Atom

A ligand atom whose electrons are shared with a Lewis acid.

Ostwald Process

A process for the industrial production of nitrogen oxide and nitric acid from ammonia and oxygen.

Standard Electrodes

Half-cells in which the oxidized and reduced forms of a species are present at unit activity, 1.0M solutions of dissolved ions, 1.0atm partial pressure of gases, and pure solids and liquids.

Photochemical Smog

A brownish smog occurring in urban areas receiving large amounts of sunlight, caused by photochemical (light-induced) reactions among nitrogen oxides, hydrocarbons and other components of polluted air that produce photochemical oxidants.

 

Nodal Plane

A region in which the probability of finding an electron is zero.

 

Ioniztion

The breaking up of a compound into separate ions.

Graham's Law

The rates of effusion of gases are inversely proportional to the square roots of their molecular weights or densities.