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A sample of matter composed of two or more substances, each of which retains its identity and properties.

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Percent Purity

The percent of a specified compound or element in an impure sample.

Oxidizing Agent

The substance that oxidizes another substance and is reduced.

Specific Gravity

The ratio of the density of a substance to the density of water.

Positron

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

Nucleus

The very small, very dense, positively charged center of an atom containing protons and neutrons, as well as other subatomic particles.

Homogeneous Catalyst

A catalyst that exists in the same phase (solid, liquid or gas) as the reactants. The process is called Homogeneous Catalysis.

Cathodic Protection

Protection of a metal (making ir a cathode) against corrosion by attaching it to a sacrifical anode of a more easily oxidized metal.

Oxide

A binary compound of oxygen.

Strong Electrolyte

A substance that conducts electricity well in a dilute aqueous solution.

 

Oxidation

An algebraic increase in the oxidation number, may correspond to a loss of electrons.