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Potentials, E, of half-reactions as reductions versus the standard hydrogen electrode.

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Absolute Entropy (of a substance)

The increase in the entropy of a substance as it goes from a perfectly ordered crystalline form at 0 °K (where its entropy is zero) to the temperature in question.

Entropy is a measure of the “dilution” of thermal energy.

Polymer

A large molecule consisting of chains or rings of linked monomer units, usually characterized by high melting and boiling points.

20 interesting chemistry facts

20 interesting chemistry facts.

Chemical Hygiene Officer (CHO)

A person or employee who is qualified by training or experience to provide technical guidance in the development and implementations of the provisions of a Chemical Hygiene Plan (CHP)

Atomic Radius

Radius of an atom.

Hard Water

Water containing Fe3+, Ca2+, and Mg2+ ions, which forms precipates with soap.

Molecular Geometry

The arrangement of atoms (not lone pairs of electrons) around a central atom of a molecule or polyatomic ion.

Chemical Change

A change in which one or more new substances are formed.

Dispersed Phase

The solute-like species in a colloid.

Freezing Point Depression

The decrease in the freezing point of a solvent caused by the presence of a solute.ing Point