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Compound in which a carbonyl group is bound to two alkyl or two aryl groups, or to one alkyl and one aryl group.

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Polydentate

Refers to ligands with more than one donor atom.

Particulate Matter

Fine divided solid particles suspended in polluted air.

Kinetic Energy

Energy that matter processes by virtue of its motion.

Coke

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

Electron Deficient Compounds

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

Compressed Gas

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

Substance

Any kind of matter all specimens of which have the same chemical composition and physical properties.