Discusses some of the controversial organic chemical substances such as DDT, Red Dye No. 2, DES, Tris, Laetrile, cyclamate, and saccharin. Concludes that the use of some has to be considered on a benefit/risk ratio. (GA)

Discusses the principle of nonisothermal kinetics and some of the factors involved in such reactions, especially when considering the reliability of the kinetic parameters, compared to those of isothermal conditions. (GA)

Discusses the possible advantages of decomposing water by means of thermochemical cycles. Explains that, if energy consumption can be minimized, this method is capable of producing hydrogen more efficiently than electrolysis. (GA)

Describes how to determine heats of adsorption by means of gas-solid chromatography. Explains the measureable variables involved, the relationships among them, and the graphs to be drawn. (GA)

Discusses the aggregation pheromone of the smaller European elm bark beetle, Scolytus multistriatus (Marsham), with emphasis on information that could be used in the classroom as a practical application of organic chemistry. (Author/GA)

Presents a brief update scheme of known (CH)8 interconversions where established routes for the isomers exist, and pointing to the fact that many isomers are still unknown. (GA)

Explains using the linear combination of bonding orbitals methods; why two different diagrams are used to represent the molecules when the properties of homonuclear diatomic molecules are being discussed. (GA)

Describes a midterm evaluation procedure of chemistry teaching assistants by their students and immediate feedback of results to the teaching assistants themselves for the purpose of helping them improve their teaching skills. (GA)

Describes the intuitive approach used in general chemistry and points out its pedagogical advantages. Explains how to extend it to acid-base equilibrium calculations without the need to introduce additional sophisticated concepts. (GA)

Describes a machine which demonstrates the statistical bases of chemical equilibrium, and in doing so conveys insight into the connections among statistical mechanics, quantum mechanics, Maxwell Boltzmann statistics, statistical thermodynamics, and transition state theory. (GA)

Presents two demonstrations; one on Boyle's Law, to illustrate the gas law and serve as a challenging problem for the students; the other is a modified Color Blind Traffic Light demonstration in which the oscillating reactions were speeded up. (GA)

Explains the benefits of physical exercises to the human body, pointing out that inactivity is the major contributor to the lack of physical fitness in America. Concludes that sugar, which has no nutritional value, is very harmful to the body. (GA)

Describes how a high school chemistry teacher runs his classes to prepare students for college. Discusses the examinations routine, the grading system, the laboratory reports, the homework assignments, and the extent of parent participation. (GA)

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

Describes the components and the molecular structures of soaps and detergents and the way they work. (GA)