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The absolute entropy of a substance in its standard state at 298 K.

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Metallic Conduction

Conduction of electrical current through a metal or along a metallic surface.

Zone Refining

A method of purifying a bar of metal by passing it through an induction heater, this causes impurties to move along a melted portion. This method applies the fact when a metal crystallizes on cooling, impurities are automatically expelled as they do not form part of the crystal.

Square Planar

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

DP number

The degree of polymerization, the average number of monomer units per polymer unit.

Semipermable Membrane

A thin partition between two solutions through which certain molecules can pass but others cannot.

Leveling Effect

Effect by which all acids stronger than the acid that is characteristic of the solvent react with solvent to produce that acid, similar statement applies to bases. The strongest acid (base) that can exist in a given solvent is the acid (base) characteristic of the solvent.

Polydentate

Refers to ligands with more than one donor atom.

Anion

A negative ion, an atom or goup of atoms that has gained one or more electrons.

 

Hard Water

Water containing Fe3+, Ca2+, and Mg2+ ions, which forms precipates with soap.

Osmotic Pressure

The hydrostatic pressure produced on the surface of a semipermable membrane by osmosis.