Presents calculations that suggest stoichiometric, ionic, and noble gas-metal compounds may be stable. Bases calculations on estimated values of electron affinity, anionic radius for the noble gases and for the Born exponents of resulting crystals. Suggests the desirability of experiments designed to prepare compounds containing anionic,…

Resistance probes for the laboratory can be divided into two main categories: (1) those involving direct use of resistance; and (2) those involving an indirect use of resistance. Described are several applications of both types related to chemistry and physics. (RH)

Described are three chemistry demonstrations designed to be used with overhead projectors. One activity suggests an activity for determining unknown liquids. The second activity describes a plastic spot plate for overhead demonstrations. Also described is a demonstration to show pH of selected chemicals. (RH)

Describes three types of chemical content, learning strategies for each type, and methods of teaching students to use the appropriate strategies. Provides suggestions for improving students' ability to learn. (CW)

Describes: (l) a microcomputer-based system for filing test questions and assembling examinations; (2) microcomputer use in practical and simulated experiments of gamma rays scattering by outer shell electrons; (3) an interactive, screen-oriented, general linear regression program; and (4) graphics drill and game programs for benzene synthesis.…

Shows that important discoveries in physical sciences cited in textbooks were made by women, although they may not be given credit for their work. Also discusses the contributions of 10 female scientists to provide role models for students. (DH)

Provides highlights of lectures, workshops, papers, and symposia presented at a conference which addressed such areas of chemical education as college/high school chemistry teaching; curriculum/curriculum development; safety; two-year programs; computers; toxicology and health hazards; problem-solving; writing skills development; textbooks;…

Presents highlights from "The Technological Marketplace: Supply and Demand for Scientists and Engineers," a report which provides a synthesis of data found in 50 other reports. In addition, these data are analyzed and trends pointed out for such fields as chemistry, chemical engineering, and other science/engineering fields. (JN)

Provides abstracts of five papers presented at the Fourth Annual Microcomputers in Education Conference. Papers considered microcomputers in science laboratories, Apple II Plus/e computer-assisted instruction in chemistry, computer solutions for space mechanics concerns, computer applications to problem solving and hypothesis testing, and…

Presents and analyzes data on sources of research and development (R&D) funds; R&D spending by government agencies; how industry apportions its R&D outlays; spending by individual chemical companies; manpower in industrial R&D; sources/uses of academic R&D funds; largest spenders on R&D; and demographic trends. (JN)

Describes a demonstration in which gaseous ammonia and hydrochloric acid are used to illustrate rates of diffusion (Graham's Law). Simple equipment needed for the demonstration include a long tube, rubber stoppes, and cotton. Two related demonstrations are also explained. (DH)

Reviews background of atomic absorption spectrometry techniques. Discusses problems encountered and precautions to be taken in determining trace elements in the parts-per-billion concentration range and below. Concentrates on determining chromium in biological samples by graphite furnace atomic absorption. Considers other elements, matrices, and…

Describes a laboratory experiment which explores the effects of adding inert salts to electrolytic cells and demonstrates the difference between concentration and chemical activity. Examines chemical potentials as the driving force of reactions. Provides five examples of cell potential and concentration change. (JM)

Describes an experiment combining qualitative and quantitative information from hydrogen nuclear magnetic resonance spectra. Reviews theory, discusses the experimental approach, and provides sample results. (JM)

Provides a short history of chemistry education in the United States. Indicates that although the chemistry of the first half of the twentieth century was theoretical in nature, chemistry teaching today seems to be returning to the utilitarian focus of colonial chemistry. (JN)