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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.

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Oxidation

An algebraic increase in the oxidation number, may correspond to a loss of electrons.

Charle's Law

At constant pressure the volume occupied by a definite mass of gas is directly proportional to its absolute temperature.

Suspension

A heterogeneous mixture in which solute-like particles settle out of solvent-like phase some time after their introduction.

Secondary Standard

A solution that has been titrated against a primary standard. A standard solution is a secondary standard.

 

Background Radiation

Ratiation extraneous to an experiment. Usually the low-level natural radiation form cosmic rays and trace radioactive substances present in our environment.

Exothermicity

The release of heat by a system as a process occurs.

xylidine

Any of six isomeric compounds that have the formula C8H11N, are derivatives of xylene, and resemble aniline: used in dye manufacture.

Energy

The capacity to do work or transfer heat.

Critical Temperature

The temperature above which a gas cannot be liquefied, the temperature above which a substance cannot exhibit distinct gas and liquid phases.

Free Radical

A highly reactive chemical species carrying no charge and having a single unpaired electron in an orbital.