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Secondary voltaic cell used in most automobiles.

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Electronegativity

A measure of the relative tendency of an atom to attract electrons to itself when chemically combined with another atom.

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.

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.

Standard Molar Enthalphy of Formation

The amount of heat absorbed in the formation of one mole of a substance in a specified state from its elements in their standard states.

Secondary Voltaic Cells

Voltaic cells that can be recharged, original reactanats can be regenerated be reversing the direction of the current flow.

xanthene dye

Any of a group of dyes having a molecular structure related to that of xanthene in which the aromatic (C6H4) groups are the chromophore.

 

Electrochemistry

Study of chemical changes produced by electrical current and the production of electricity by chemical reactions.

Periodicity

Regular periodic variations of properties of elements with atomic number (and position in the periodic table).

Formula Weight

The mass of one formula unit of a substance in atomic mass units.

 

Heat Capacity

The amount of heat required to raise the temperature of a body (of any mass) one degree Celsius.