Discusses the effect of replacing argon gas with krypton gas in electric light bulbs. (RH)

Describes a series of experiments designed to verify the various relationships implicit in the ideal gas equation and shows that the success of the Graham's law effusion experiments can be explained by elementary hydrodynamics. (GS)

Presents an explanation, without mathematical equations, of the basic principles of quantum mechanics. Includes wave-particle duality, the probability character of the wavefunction, and the uncertainty relations. (MLH)

States that college chemistry teachers can best assess a curriculum by observing how much reinforcement it provides to the students. Also urges that curricula should offer opportunities to instruct the concrete operational student in formal operational thought. (MLH)

Describes the purpose, content, and relevancy of courses dealing with natural and artificial aquatic environments, including surface water and ground water systems as well as water and waste treatment processes. Describes existing programs which are offered at the graduate level in this subject area. (MLH)

Describes the general features of three schemes used by teachers to assess their students' manipulative, observational, interpretational, and planning abilities and their attitude toward laboratory work. The three schemes were open-ended, intermediate, and check-list modes. A comparison of grades derived from these modes is presented. (GS)

Describes an experiment in which the rate of reaction can be followed using a colorimeter and data can be used to determine order of reaction, rate constant, and energy of activation. (GS)

Describes general approaches that seem to be necessary in bridging the gap between a strict academic approach to chemistry and the practical aspects of problem solving in pollution abatement control. Presents the EPA role in training in view of graduate training grant phase-out. (Author/GS)

Describes the role chemistry departments should assume in the environmental quality control area. Includes problems of program design, course offerings, research problems, and career qualifications. (GS)

Presents the philosophy and structure of an environmental program designed to retain the students identities as chemists. Describes the two core courses in environmental chemistry and lists the instructional materials used. (GS)