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

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Covalent Bond

Chemical bond formed by the sharing of one or more electron pairs between two atoms.

Oxide

A binary compound of oxygen.

Electron Affinity

The amount of energy absorbed in the process in which an electron is added to a neutral isolated gaseous atom to form a gaseous ion with a 1- charge, has a negative value if energy is released.

Homologous Series

A series of compounds in which each member differs from the next by a specific number and kind of atoms.

Partial Pressure

The pressure exerted by one gas in a mixture of gases.

Sigma Orbital

Molecular orbital resulting from head-on overlap of two atomic orbitals.

Denaturation

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

pH

Negative logarithm of the concentration (mol/L) of the H3O+[H+] ion, scale is commonly used over a range 0 to 14.

Mass Number

The sum of the numbers of protons and neutrons in an atom, an integer.

Le Chatelier's Principle

States that a system at equilibrium, or striving to attain equilibrium, responds in such a way as to counteract any stress placed upon it.
If a stress (change of conditions) is applied to a system at equilibrium, the system shifts in the direction that reduces stress.