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Reaction of a substance with water.

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Amphiprotism

Ability of a substance to exhibit amphiprotism by accepting donated protons.

Double Bond

Covalent bond resulting from the sharing of four electrons (two pairs) between two atoms.

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.

Accuracy

How closely a measured value agrees with the correct value.

Law of Partial Pressures (Dalton's Law)

The total pressure exerted by a mixture of gases is the sum of the partial pressures of the individual gases.

Wild patina, is it so bad?

Usually this kind of patina appears on monuments. The most striking example is the Statue of Liberty in New York.

Ionic Bonding

Chemical bonding resulting from the transfer of one or more electrons from one atom or a group of atoms to another.

Differential Thermometer

A thermometer used for accurate measurement of very small changes in temperature.

Fast Neutron

A neutron ejected at high kinetic energy in a nuclear reaction.

Method of Initial Rates

Method of determining the rate-law expression by carrying out a reaction with different initial concentrations and analyzing the resultant changes in initial rates.