Discusses the design of computational exercises useful for a course in numerical methods for chemists. Some of the exercises make use of available programs while others require the student to write programs incorporating numerical routines. The emphasis throughout is on the use of numerical methods to solve chemical problems. (Author)

Listed are textbook errors, by numbered topic, which have been noted in the Journal of Chemical Education since 1966. This index supplements a previous one published in June 1967. Appended is a subject matter index as well. (CS)

Reviews the events leading up to the establishment of oxygen (rather than air) as an important component in the second stage treatment of municipal wastewater in sewage-disposal plants. Advantages, problems, and costs of using oxygen are discussed. (CS)

No correlation was found between test scores and time to test completion in a study of psychology and chemistry students taking multiple-choice tests with no time restrictions. (Editor)

Discusses the results of a survey on process control education which was conducted in the United States and Canada in 1978. Process control courses and textbooks at the undergraduate and graduate level are included. (HM)

Two demonstrations are described: (1) a variant of preparing purple benzene by phase transfer catalysis with quaternary ammonium salts and potassium permanganate in which crown ethers are used; (2) a corridor or "hallway" demonstration in which unknown molecular models are displayed and prizes awarded to students correctly identifying the…

The separation by high performance liquid chromatography of five common dyes from foods containing "artificial color" is described. (CS)

The application of chemistry to the justice system is presented. The role of the forensic chemist, historical development of forensic laboratories, and tools of the criminalists are also discussed. (HM)

This paper, presented at the McMaster International Conference on New Directions in the Chemistry Curriculum, discusses the answers to five questions which deal with basic philosophy concerning new chemistry curricula. (HM)

This undergraduate biochemistry experiment introduces the student to techniques for cell lysis and release of protein from the cell in soluble form, ion exchange and gel chromatography, and dialysis. (Author/BB)

Describes an experiment suitable for an instrumental analysis or quantitative analysis course. (BB)

This experiment can be used as either a demonstration or a laboratory activity illustrating the principles of affinity chromatography to purify an enzyme. (BB)

Discusses how trace elements are determined in soils and plants and accounts for some of the effects observed. (BB)

Provides abstracts of papers and articles in various fields of chemistry as a service for both teachers and students. Lists numerous journals which are considered for articles. (GA)

Experimental and theoretical data are presented which verifies the existence of the hydronium ion. This existence was confirmed directly by x-ray and neutron diffraction in hydrochloric acid. Recommended is the abandonment of the erroneous hydrogen ion formulation and names such as proton hydrate. (BT)