Concludes that Carl Scheele first observed oxygen and clearly understood what he was observing in June 1771, when he heated manganese dioxide with concentrated sulfuric acid. This was more than three years before Lavoisier or Priestley (who is usually credited with the discovery of oxygen) made similar observations. (Author/MLH)

Describes a reversal development process which produces black and white positive slides from two Kodak black and white films: Microfile AHU 6552, and High Contrast Copy Film 5069. (MLH)

Illustrates the frustrating search for the best way to teach college chemistry, by pointing out that there are problems associated with any type of curriculum, teaching technique, or grading method. Includes statistics on a Keller type physical chemistry course. (MLH)

Describes "Chemistry and the Human Environment," a one-semester experimental course for freshman and sophomore nonscience majors. Fundamental chemical principles are introduced in class only on a "need to know" basis; each student investigates a special topic of his own choosing relating an urgent social problem quite specifically to detailed…

Describes a "feedback course" offered at Brown University, in which undergraduates redesigned the introductory organic chemistry laboratory. The students specified objectives for the ideal lab, then devised laboratory experiments. Laboratory safety was stressed, all dangerous reagents and solvents were eliminated, and toxicological data were…

Designed for first-year students of radiochemistry and atomic physics, this experiment tests the fundamental Moseley Law and introduces the method of elemental chemical analysis by X-ray fluorescence. (Author/MLH)

Discusses the case study method of teaching high school chemistry as a supplement to traditional methods. The case study, provided by the instructor, generally focuses on a socially important issue related to chemistry; the student investigates the problem for one or two weeks and provides a solution. (MLH)

Describes a computer program, designed for second semester organic chemistry courses, which graphically displays organic synthesis routes on a screen. (MLH)

Describes a course which includes laboratory sessions and computer sessions, intended to acquaint the student with the laboratory based digital computer as a chemical tool. (MLH)

Describes an experiment designed to acquaint the chemistry student with polymerization reactions, vacuum techniques, liquid scintillation counting, gas-liquid chromatography, and the handling of radioactive materials. (MLH)

Describes an experiment in which rat adipose tissue samples are exposed to labeled glucose; insulin is added to one sample. Subsequent scintillation counting demonstrates the ability of insulin to facilitate the entry of glucose into the tissue. (MLH)