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A method of counting electrons in a covalently bonded molecule or ion, counts bonding electrons as though they were equally shared between the two atoms.

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Metal

An element below and to the left of the stepwise division (metalloids) in the upper right corner of the periodic table, about 80% of the known elements are metals.

Active Metal

Metal with low ionization energy that loses electrons readily to form cations.

Colligative Properties

Physical properties of solutions that depend upon the number but not the kind of solute particles present.

Boiling Point Elevation

The increase in the boiling point of a solvent caused by the dissolution of a nonvolatile solute.

Denaturation

A process pertaining to a change in structure of a protein form regular to irregular arrangement of the polypeptide chains.

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.

Stereoisomers

Isomers that differ only in the way that atoms are oriented in space, consist of geometrical and optical isomers.

 

Saccharic

of or derived from saccharin or a saccharine substance.

 

Eluant or eluent

The solvent used in the process of elution, as in liquid chromatography.

 

Reducing Agent

The substance that reduces another substance and is oxidized.