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The energy stored in the nucleus of an atom and released through fission, fusion, or radioactivity. In these processes a small amount of mass is converted to energy according to the relationship E = mc2, where E is energy, m is mass, and c is the speed of light.

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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.

Anode

In a cathode ray tube, the positive electrode. Electrode at which oxidation occurs.

Chemical Equation

Description of a chemical reaction by placing the formulas of the reactants on the left and the formulas of products on the right of an arrow.

Contact Process

Industrial process by which sulfur trioxide and sulfuric acid are produced from sulfur dioxide.

Substitution Reaction

A reaction in which an atom or a group of atoms is replaced by another atom or group of atoms.

Carbonium ion

An orgainic ion carrying a positive charge on a carbon atom.

Solvolysis

The reaction of a substance with the solvent in which it is dissolved.

Free Radical

A highly reactive chemical species carrying no charge and having a single unpaired electron in an orbital.

Radical

An atom or group of atoms that contains one or more unpaired electrons (usually very reactive species)

Amide

Compound containing the O-C-N group.Compound that can be considered a derivative of ammonia in which one or more hydrogens are replaced by a alkyl or aryl groups.