The periodic table is "a table illustrating the periodic system, in which the chemical elements, formerly arranged in the order of their atomic weights and now according to their atomic numbers, are shown in related groups." ~ dictionary.com
An element is "one of a class of substances that cannot be separated into simpler substances by chemical means." ~ dictionary.com
The history and use of our earth's chemical elements : a reference guideAccess to library databases is restricted to current student, faculty and staff ONLY.
