The history and definition of pH is presented along with sample calculations. (BB)

Describes the development and the composition of birth control pills. Explains the way the pill works, and other methods of contraception. (GA)

Discusses ways of teaching the mole concept in high school chemistry classes. Provides resource information on the mole and Avogadro's Number. Includes an explanation of four methods for measuring Avogadro's Number and instructions on how to use the mole. (MA)

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

Reviews the chemistry of oxidation appropriate for inclusion in secondary school chemistry. (SL)

Describes the historical development of chemical formulas. (SL)

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

Reviews determination of atomic weights. (SL)

Second part of an article reviewing structural formulas. (SL)

Provides a basic introduction to chemical equations. (SL)

Discusses some of the advantages of using overhead projectors to demonstrate chemistry experiments. Provides a list of guidelines and equipment for these types of demonstrations. Describes 21 simple demonstrations that can be done in chemistry classrooms that require minimal equipment and cost. (TW)

Describes nine chemistry demonstrations that can be done using an overhead projector. Includes demonstrations on common ion effect, crystal formation from supersaturated solutions, making iron positive with nitric acid, optical activity, carbon dioxide in human breath, amphoteric hydroxides, the surface tension of mercury, and natural acid-base…

Presents a detailed discussion on the chemistry of glass. Topics discussed include: natural glass, early history, modern glass composition, raw materials for glass melting, chemically modified glasses, modern glass forming, glass ceramics, and new developments in glass research. (BT)

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

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