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A measure of the amount of matter in an object. Mass is usually measured in grams or kilograms.

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Ether

Compound in which an oxygen atom is bonded to two alkyl or two aryl groups, or one alkyl and one aryl group.

Dispersing Medium

The solvent-like phase in a colloid.

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.

Diamagnetism

Weak repulsion by a magnetic field.

Positron

A Nuclear particle with the mass of an electron but opposite charge.

Explosive limits

The range of concentrations over which a flammable vapour mixed with proper ratios of air will ignite or explode if a source of ignitions is provided.

Outer Orbital Complex

Valence bond designation for a complex in which the metal ion utilizes d orbitals in the outermost (occupied) shell in hybridization.

Solution

Homogeneous mixture of two or more substances.

Magnetic Quantum Number (mc)

Quantum mechanical solution to a wave equation that designates the particular orbital within a given set (s, p, d, f ) in which a electron resides.

Suspension

A heterogeneous mixture in which solute-like particles settle out of solvent-like phase some time after their introduction.