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Refers to an optically active substance that rotates the plane of plane polarized light counterclockwise, also called levo.

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Avogadro's Law

At the same temperature and pressure, equal volumes of all gases contain the same number of molecules.

Extrapolate

To estimate the value of a result outside the range of a series of known values. Technique used in standard additions calibration procedure.

Alkylbenzene

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

Colloid

A heterogeneous mixture in which solute-like particles do not settle out.

Addition Reaction

A reaction in which two atoms or groups of atoms are added to a molecule, one on each side of a double or triple bond. Types of addition reaction include electrophilic, nucleophilic (polar) and free radical addition (non-polar).

Vapor Pressure

The particle pressure of a vapor at the surface of its parent liquid.

Intermolecular Forces

Forces between individual particles (atoms, molecules, ions) of a substance.

Dissociation Constant

Equilibrium constant that applies to the dissociation of a comples ion into a simple ion and coordinating species (ligands).

Potential Energy

Energy that matter possesses by virtue of its position, condition or composition.

Ioniztion

The breaking up of a compound into separate ions.