Reports a modification of a simple method previously described for determining enthalpies of sublimation and comments on some of the method's inherent limitations. (Author/GS)

Presents a description of the development of a laboratory-oriented chemistry course and the results noticed when the course was implemented. The syllabus was considered to be highly successful. (EB)

The program objectives are to instruct students in laboratory techniques, experimental procedures, evaluation of results, and laboratory project design. Integration of techniques which may span several areas of chemistry is emphasized in the solution of problems. Current course content of the program is listed. (GS)

Describes an experiment designed for second-level summer school chemistry students enrolled in Great Britain's Open University. (GS)

Suggests current scientific literature published in journals of biological research as a source of new, interesting, and enlightened experiments to reinforce an understanding of the process and sense of science. Presents an exercise developed using current literature. (EB)

Presents an alternative series of investigations replacing the propanone-trichloromethane system (Topic 10) in the Nuffield A-Level course. A trichloromethane-ethyl ethanoate (acetate) system presented in four experiments give good results and removed the dangers arising from the other system. Topic 10 need not be re-written, just the replacement…

Describes an approach which begins with observations and systems familiar to the student and proceeds to develop and test models to explain them. Experimental topics include Brownian motion, a germinating cell, phase change of p-dichlorobenzene, extension and contraction of rubber, and an enzyme system. (GS)

Describes an investigation involving acid hydrolysis and using both volumetric and kinetic techniques. Presents examples of the determination of the rate constant and its variation with temperature. (GS)

Describes a survey of experiments including a stringed instrument experiment and discusses other instructional uses of cartridges. Includes information on the characteristics of cartridges. (GH)

Describes a take-home experiment requiring only running water, a flat surface, a fluorescent light, and a ruler. Suggests elaboration of the experiment. A photograph is included. (GH)