Presents articles on: the measurement of flouride levels in natural waters; the effect of sunlight on the rate of chlorine decomposition in a swimming pool; and curriculum development in Australian agriculture science. (MLH)

Describes instruments for the quantitative measurement of radioactively tagged organic and biological molecules used as tracers. (MLH)

Discusses the legal implications of situations in which chemical educators may be liable for negligence. (MLH)

Describes the use of computer-assisted graphical displays in experiments to determine the order and activation energy for a chemical reaction. (MLH)

Discusses teaching science at the secondary and college levels and proposes a one-year unified science course organized around the human system. It would emphasize the basic principles of biology, chemistry, and physics. (SL)

Describes the construction and operation of a moveable videotape studio that is used in a chemistry laboratory to illustrate laboratory skills and experiments. (MLH)

Discusses a comparison of the relative effects on the stomach of a strong acid, hydrochloric acid, and a weak acid, aspirin. Also discusses molecular geometrics using the Valence Shell Electron Repulsion Theory. (MLH)

Describes an advanced inorganic chemistry experiment in which students prepare two coordination compounds and study their stereochemistry using infrared spectroscopy. (MLH)

Describes a kinetic simulation computer program that generates experimental data for use in an instructional program on the design of experiments and the analysis of results. (MLH)

Describes an experiment in which nitric acid is synthesized from ammonia on a small scale to illustrate a major industrial process. (MLH)

Reports recent statistics on professionals in chemistry, including the fact that a high percentage of new Ph.D. chemists take postdoctoral positions and that a declining percentage of new B.S. chemists are finding jobs in the chemical area. (MLH)

Presents eight chemistry activities that are interesting and involve simple, easily available materials. Topics include mystery writing, valentine hearts, flame tests, evaporation race, buoyancy versus mass, determination of relative masses of gases, mole sample container, and cold and hot packs. (DDR)

Recommends an approach to the treatment of acid-base equilibria that involves treating each reaction as either going to completion or not occurring at all. Compares the method with the traditional approach step by step. (DDR)

Describes a method for experimenting with both whitening and deacidifying old newspaper clippings using sodium borohydride bleaching. Clippings are soaked in distilled water then immersed in sodium borohydride for 15-20 minutes. After rinsing with distilled water, the paper is washed with saturated Ca(OH)2 solution. Readers should not begin…

Describes a project designed to introduce infrared spectroscopy as a structure-determination technique. Students are introduced to infrared spectroscopy fundamentals then try to determine the identity of an unknown liquid from its infrared spectrum and molecular weight. The project demonstrates that only rarely can the identity of even simple…