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Covalent bond in which there is an unsymmetrical distribution of electron density.

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Alkyl Group

A group of atoms derived from an alkane by the removal of one hydrogen atom.

Binary Compound

A compound consisting of two elements, may be ionic or covalent.

Compressed Gas

A gas or mixture of gases having, in a container an absolute pressure exceeding 40 psi at 21.1°C (70°F)

Electrophoresis

A technique for separation of ions by rate and direction of migration in an electric field.

Critical Temperature

The temperature above which a gas cannot be liquefied, the temperature above which a substance cannot exhibit distinct gas and liquid phases.

Acid

A substance that produces H+(aq) ions in aqueous solution. Strong acids ionize completely or almost completely in dilute aqueous solution. Weak acids ionize only slightly. Chemicals or substances having the property of an acid are said to be acidic.

Denaturation

A process pertaining to a change in structure of a protein form regular to irregular arrangement of the polypeptide chains.

Allotropes

Different forms of the same element in the same physical state.

Insoluble Compound

A very slightly soluble compound.

Composition Stoichiometry

Descibes the quantitative (mass) relationships among elements in compounds.