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Compounds that contain the same number of the same kinds of atoms in different geometric arrangements.

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xylan

The pentosan occurring in woody tissue that hydrolyzes to xylose: used as a source of furfural.

Binary Acid

A binary compound in which H is bonded to one or more of the more electronegative nonmetals.

Dextrorotatory

Refers to an optically active substance that rotates the plane of plane polarized light clockwise, also called dextro.

Lewis Base

Any species that can make available a share in an electron pair.

Forbidden Zone

A relatively large energy separation between an insulator's highest filled electron energy band and the next higher energy vacant band. Beginning in the fourth energy level, a set of seven degenerate orbitals per energy level, higher in energy than s, p, and d orbitals of the same energy level.

Temperature

A measure of the intensity of heat, i.e. the hotness or coldness of a sample. or object.

All Chemicals - Chemical Glossary

The Chemical Glossary currently has 651 chemical entries. You may search the Chemical Glossary by entering the keyword in the search box or by browsing the entire chemical glossary by letter in alphabetical order.

Standard Electrodes

Half-cells in which the oxidized and reduced forms of a species are present at unit activity, 1.0M solutions of dissolved ions, 1.0atm partial pressure of gases, and pure solids and liquids.

Lewis Acid

Any species that can accept a share in an electron pair.

Electrophoresis

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