A laboratory experiment designed as a model for studying enzyme activity with a basic spectrometer is presented. Included are background information, experimental procedures, and a discussion of probable results. Stressed is the value of the use of Nuclear Magnetic Resonance in biochemistry. (CW)

Described is an apparatus which can be made for student use in performing organic qualitative analysis. The flask replaces the need for more expensive equipment. Discussed are reagents, equipment preparation, experimental procedures, and sample preparation. (CW)

Described is a procedure by which the performance of chemical hoods can be tested. This procedure uses a mixture of dry ice and water to create a "smoke" for use in the test. Implications for sash design, performance evaluations and testing under standard and nonstandard conditions are discussed. (CW)

Discussed is a technique used by Alfred Werner to resolve inorganic coordination compounds. The materials, procedures and analysis necessary for undergraduates to repeat this procedure are described. (CW)

In this article, background information on the photochemical properties of nucleic acids is provided and an experiment to illustrate this concept is presented. Sample preparation, procedures, and data analysis are discussed. Sample UV absorption spectra are included. (CW)

Presented is an activity in which the pH of a solution can be quantitatively measured using a spectrophotometer. The theory, experimental details, sample preparation and selection, instrumentation, and results are discussed. (CW)

Described are six multipulse experiments with an emphasis on their application to common problems in chemistry. Exercises in relaxation time measurement, spin echoes, and polarization transfer are proposed. (CW)

Directions for the construction of an electronic version of an electroscope are provided. Demonstration and operation of this apparatus is discussed. A list of components and a schematic diagram are provided. (CW)

Describes laboratory-oriented software programs that are short, time-saving, eliminate computational errors, and not found in public domain courseware. Program availability for IBM and Apple microcomputers is included. (RT)

Describes a demonstration which allows students to witness a type of continuous spectrum and an absorption spectrum. Provides a diagram and explanation for the construction of an absorption box. (RT)

Describes a thin film rectangular dielectric waveguide and its laboratory use. Discusses the theory of uniaxial thin film waveguides with mathematical expressions and the laboratory procedures for a classroom experiment with diagrams. (Author/YP)

Describes experiences, or "lab puzzles," which will help students develop problem-solving skills in a laboratory setting. Outlines procedures for developing techniques, setting boundaries, and finding the number of molecules of water in Lake Erie. (RT)

Described is a technique for monitoring the quality of freshwater aquatic habitats. Methods, comparison of samples, equipment, and data analysis are discussed and an example is presented. (CW)

Some typical teacher concerns about technology education are explored. Answers reflect the belief that implementing technology education does not require entirely new instruction methods. Concerns explored include (1) use of the project method, (2) specialized equipment, (3) problem-solving, (4) needs of special students, and (5) teacher skills.…

Provides information on nutritional caloric value determination. Describes the chemical components of peanuts. Explains how to construct a soda can calorimeter for determining the heat released by a burning nut. Describes how to determine calories and kilocalories. Author asserts the activity can be adopted for children of any age. (eight…