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Oxidation of metals in the presence of air and moisture.

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Electrolyte

A substance whose aqueous solutions conduct electricity.

 

Polyene

A compound that contains more than one double bond per molecule.

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.

Law of Conservation of Matter

There is no detectable change in the quantity of matter during an ordinary chemical reaction.

Stoichiometry

Description of the quantitative relationships among elements and compounds as they undergo chemical changes.

Common Ion Effect

Suppression of ionization of a weak electrolyte by the presence in the same solution of a strong electrolyte containing one of the same ions as the weak electrolyte.

D -Transition elements (metals)

B Group elements except IIB in the periodic table, sometimes called simply transition elements EX. Fe, Ni, Cu, Ti .
For further information see Metals.

Metallic Conduction

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

Frequency

The number of repeating corresponding points on a wave that pass a given observation point per unit time.

Compressed Gas

A gas or mixture of gases having, in a container an absolute pressure exceeding 40 psi at 21.1°C (70°F)