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A colorless, crystalline pentose sugar, C5H10O5, derived from xylan, straw, corncobs, etc., by treating with heated dilute sulfuric acid, and dehydrating to furfural if stronger acid is used.

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Nernst Equation

Corrects standard electrode potentials for nonstandard conditions.

Foam

Colloidal suspension of a gas in a liquid.

Heteronuclear

Consisting of different elements.

Substitution Reaction

A reaction in which an atom or a group of atoms is replaced by another atom or group of atoms.

Titration

A Procedure in which one solution is added to another solution until the chemical reaction between the two solutes is complete, the concentration of one solution is known and that of the other is unknown.

 

Derivative

A compound that can be imagined to arise from a partent compound by replacement of one atom with another atom or group of atoms. Used extensively in orgainic chemistry to assist in identifying compounds.

Mass Spectrometer

An instrument that measures the charge-to-mass ratio of charged particles.

Mass Number

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

Metallic Bonding

Bonding within metals due to the electrical attraction of positively charges metal ions for mobile electrons that belong to the crystal as a whole.

Effective Collisons

Collision between molecules resulting in a reaction, one in which the molecules collide with proper relative orientations and sufficient energy to react.