Traces the formation of the concepts of acids and bases by describing theories ascribed to various scientists. (CP)

Discusses historically the term element as used in chemistry as a suitable topic for the secondary level chemistry class. (SL)

Presents an historical review of the role of petroleum in world history and information on the chemistry of petroleum. It is suggested that petroleum chemistry be discussed since within the next two decades oil and gas will provide the major portion of U.S. energy. (Author/SA)

Describes the historical development of chemical formulas. (SL)

A historical review of the development of aromatic chemistry, including the Kekule formula, Huckel's Rule, polycyclic aromatics, and nonclassical aromatic compounds. (BB)

Catalysis is defined and discussed as the process relates to science history, chemical reactions, enzymes, industry, catalytic reactors, and catalyst preparation. (SA)