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A Ligand that exerts a weak crystal or ligand field and ge- nerally forms high spin complexes with metals.

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Enthalpy

The heat content of a specific amount of substance, defined as E= PV.

Frasch Process

Method by which elemental sulfur is mined or extracted. Sulfur is melted with superheated water (at 170°C under high pressure) and forced to the surface of the earth as a slurry.

 

Fluids

Substances that flow freely, gases and liquids.

Base

A substance that produces OH (aq) ions in aqueous solution. Strong soluable bases are soluble in water and are completely dissociated. Weak bases ionize only slightly.

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.

Pauli Exclusion Principle

No two electrons in the same atom may have identical sets of four quantum numbers.

Atomic Mass Unit (amu)

One twelfth of a mass of an atom of the carbon-12 isotope, a unit used for stating atomic and formula weights, also called dalton.

Octahedral

A term used to describe molecules and polyatomic ions that have one atom in the center and six atoms at the corners of a octahedron.

Transition State Theory

Theory of reaction rates that states that reactants pass through high-energy transition states before forming products.

Acyl Group

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