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The percentage of the weak electrolyte that ionizes in a solution of given concentration.

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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.

Effective Molality

The sum of the molalities of all solute particles in a solution.

Electrophoresis

A technique for separation of ions by rate and direction of migration in an electric field.

Equivalent Weight

An oxidizing or reducing agent, who's mass gains (oxidizing agents) or loses (reducing agents) 6.022 x 1023 electrons in a redox reaction.
The mass of an acid or base that furnishes or reacts with 6.022 x 1023 H3O+ or OH- ions.

Catenation

Bonding of atoms of the same element into chains or rings.
The bonding together of atoms of the same element to form chains.
The ability of an element to bond to itself.

Precipitate

An insoluble solid formed by mixing in solution the constituent ions of a slightly soluble solution.

Heat of Vaporization

The amount of heat required to vaporize one gram of a liquid at its boiling point with no change in temperature. Usually expressed in J/g. The molar heat of vaporization is the amount of heat required to vaporize one mole of liquid at its boiling point with no change in temperature and usually expressed ion kJ/mol.

Cathode

Electrode at which reduction occurs in a cathode ray tube, the negative electrode.

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.

Organic Chemistry

The chemistry of substances that contain carbon-hydrogen bonds.