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Compound derived from a carbonic acid by replacing the --OH group with a halogen (X), usually --Cl, general formula is O R--C--X.

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Saturated Hydrocarbons

Hydrocarbons that contain only single bonds. They are also called alkanes or paraffin hydrocarbons.

Dermal toxicity

Adverse health effects resulting from skin exposure ot a substance.

Coordinate Covalent Bond

A covalent bond in which both shared electrons are donated by the same atom, a bond between a Lewis base and a Lewis acid.

Coordination Compound or Complex

A compound containing coordinate covalent bonds.

Control Rods

Rods of materials such as cadmium or boron steel that act as neutron obsorbers (not merely moderaters) used in nuclear reactors to control neutron fluxes and therfore rates of fission.

Atom

The smallest particle of an element.

Ideal Gas Law

The product of pressure and the volume of an ideal gas is directly proportional to the number of moles of the gas and the absolute temperature.

Lone Pair

Pair of electrons residing on one atom and not shared by other atoms, unshared pair.

Coordination Isomers

Isomers involving exchanges of ligands between complex cation and complex anion of the same compound.

Biodegradability

The ability of a substance to be broken down into simpler substances by bacteria.