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An equation of state that extends the ideal gas law to real gases by inclusion of two empirically determined parameters, which are different for different gases.

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Semiconductor

A substance that does not conduct electricity at low temperatures but does so at higher temperatures.

Sigma Orbital

Molecular orbital resulting from head-on overlap of two atomic orbitals.

Acetic Acid

CA3COOH, clear, colorless liquid, pungent odor. Boiling point 140C, flash point 54C (closed cup), autoignition temperature 38OC.

Covalent Bond

Chemical bond formed by the sharing of one or more electron pairs between two atoms.

Electrical Conductivity

Ability to conduct electricity.

Solvent

The dispersing medium of a solution.

Heteronuclear

Consisting of different elements.

Cathode Ray Tube

Closed glass tube containing a gas under low pressure, with electrodes near the ends and a luminescent screen at the end near the positive electrode, produces cathode rays when high voltage is applied.

Gangue

Sand, rock, and other impurities surrounding the mineral of interest in an ore.

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.