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The amount of heat that must be removed from one gram of a liquid at its freezing point to freeze it with no change in temperature.

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Percentage Ionization

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

Mole Fraction

The number of moles of a component of a mixture divided by the total number of moles in the mixture.

 

Neutralization

The reaction of an acid with a base to form a salt and water. Usually, the reaction of hydrogen ions with hydrogen ions to form water molecules.

Electrolytic Conduction

Conduction of electrical current by ions through a solution or pure liquid.

Colligative Properties

Physical properties of solutions that depend upon the number but not the kind of solute particles present.

Transition State Theory

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

Condensed States

The solid and liquid states.

Fuel Cells

Voltaic cells in which the reactants (usually gases) are supplied continuously.
A voltaic cell that converts the chemical energy of a fuel and an oxidizing agent directly into electriacl energy on a continuous basis.

Lanthanides

Elements 58 to 71 (after lanthanum).

Law of Combining Volumes (Gay-Lussac's Law)

At constant temperature and pressure, the volumes of reacting gases (and any gaseous products) can be expressed as ratios of small whole numbers.