Describes a simple tensiometer which provides good approximations to Young's Modulus and acceptable tensile test curves. (Author/GS)

Describes a method for offering additional topics in high school chemistry at minimal cost and at times convenient to the student. The method utilizes an independent study approach, using a slide sorter and cassette player. (GS)

Outlines the theory of chemical potentiometry, describes the experimental procedure for free fluoride determination, and presents sample data of fluoride concentration for various brands of toothpaste. (GS)

Identifies a trend in analytical chemistry toward greater use of instruments and a need for an understanding of the basic principles involved in instrumentation. This need can be fulfilled using homebuilt equipment; examples are provided in the areas of electrolytic conductance and electronic coulometry. (GS)

Attributes learning difficulties in introductory chemistry to the thesis that many students have not reached the formal operations level of intellectual development. Cites instances to support this thesis, outlines an instructional procedure to overcome the difficulty, and presents a list of competencies that can be expected of these students. (GS)

Describes a series of experiments which provide excellent evidence for different degrees of dissociation of a series of complexes and precipitate. The series is based on the copper ion as the acid and sample data are provided. (GS)

Surveys the innovations that are occurring in chemical education and raises questions that must be answered to assure that innovation has not occurred at the expense of education quality. (GS)

This training manual presents material on techniques and instrumentation used to develop data in field monitoring programs and related laboratory operations concerned with water quality and pollution monitoring. Topics include: collection and handling of samples; bacteriological, biological, and chemical field and laboratory methods; field…