Describes an experiment wherein the student can demonstrate the existence of all the thiocyanato chromium complexes, estimate the stepwise formation constants, demonstrate the robustness of chromium III complexes, and show the principles of paper electrophoresis. (GS)

Describes an experiment that will acquaint the student with the ion-exchange model, yield data which fit nicely to a computer type analysis, introduce the preparation of electrodes, provide a unique experience with elevated temperatures and ionic solvents, and provide experience in electrometric measurements. (GS)

Describes an experiment that illustrates the use of the preparative ultracentrifuge in isolating and purifying bacterial ribosomes, determines the sedimentation coefficients of the ribonucleoprotein particles, and demonstrates the subunit structure of the 70-S ribosome and the role of the magnesium ion in the association of subunits. (Author/GS)

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)

Lists the schools that are the big producers of chemistry graduates and lists the number of B.S., certified B.S., M.S., and Ph.D. degrees awarded by these schools in the 12 months ending June 30, 1974. Presents the full list of chemistry and chemical engineering graduates from all American Chemical Society approved departments. (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)

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 the use of films as primary learning material, aimed at developing some of the higher level skills which are the, often unreached, objectives of practical courses. Results of a first trial use are cited. (EB)

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)

Presents a philosophy of chemistry teaching and gives examples of how that philosophy is applied in the classroom. (GS)

Emphasizes the simplicity and elegance of early discoveries related to the hydrogen spectrum and provides an elementary experimental basis of quantum theory based on a "numbers game" which can be played by students. (Author/GS)