Analyzed are the deficiencies of a traditional freshman course in chemistry, including (1) chemistry model usage, (2) inadequate discrimination between related but different basic concepts, and (3) methods for teaching elementary ideas. Described is an approach used to resolve these problems. (CS)

Presents three reports: a description for an upper-level course in protein chemistry; a technique for generating many unique unknowns for the determination of molecular weight by viscosity; and an analogy for quantization of energy levels in which molecules are considered as books in a library. (CS)

Considers various aspects of bee stings including the physical mechanism of the venom apparatus in the bee, categorization of physiological responses of nonprotected individuals to bee sting, chemical composition of bee venom and the mechanisms of venom action, and areas of interest in the synthesis of bee venom. (CS)

Offers and discusses five guidelines to use when solving design problems: (1) evolve from simple to complex; (2) use depth-first approach; (3) develop approximate criteria; (4) use "top down/bottom up" designs alternately; and (5) make optimistic assumptions. Four examples illustrate the guidelines. (JN)

A technician auto analyzer (consisting of six modules: sampler, multichannel peristaltic pump, dialyser, heating/incubation bath, colorimeter, and recorder) was modified by using key modules and substituting standard equipment for others; spectronic 20 with homemade flow cell for colorimeter module. Descriptions and diagrams of the apparatus are…

An experiment on the operation and utility of an amperometric immobilized enzyme electrode (or probe) is described, including advantages of the experiment, equipment, reagents, preparation of phosphate buffer, enzyme immobilization techniques, laboratory procedures, precautions, and discussion of experimental results. (SK)

Selected infrared laser chemistry topics are discussed including carbon dioxide lasers, infrared quanta and molecules, laser-induced chemistry, structural isomerization (laser purification, sensitized reactions, and dielectric breakdown), and fundamental principles of laser isotope separation, focusing on uranium isotope separation. (JN)

Provides background information and problems with the formaldehyde clock reaction, including comparisons of experimental clock times reported in the literature and conditions for the reliable use of the formaldehyde clock based on a method discussed. (JN)

Describes a non-credit, remedial mathematics course for introductory chemistry students taught before the beginning of a regular semester. Recommendations to take the course, to review mathematics, or indicating that further review is not necessary are based on the results of a test mailed to students before the beginning of the semester. (SK)

A physical chemistry computer program with seven subprograms (available from the author) was developed to present student questions, evaluate mathematical expressions (calculator mode), retrieve tables, and refresh output on the terminal. Criteria for easily adding new questions are listed and sample output included. (SK)

A series of learning cycle laboratory experiments for general chemistry was developed. The exploration, invention, and application phases of one cycle related to calorimetric measurements are described. (Author/SK)

Describes an inexpensive, low-pressure liquid chromatography pump, slurry filler, stainless steel columns, and injector system suitable for the undergraduate laboratory or routine analysis. Includes sectional diagram of the pump and construction diagram of the preparative columns. (Author/SK)

Experimental procedures are provided for the quantitative determination of Vitamin A (retinol) in food products by analytical liquid chromatography. Standard addition and calibration curve extraction methods are outlined. (SK)

Materials and methods are presented illustrating a modification of the Nakai/Glinsmann technique for comparing apparent formation constants for ADP-Mg and ADP-polyamine complexes. (Author/SK)

Describes experiment expanding on principles behind measuring efficiency of chromatographic columns and allowing calculation of parameters in the van Deemter equation. Easily accomplished in a three-hour period using a gas chromatograph in which gas flow can be changed and measured. Mathematical solutions can be attained with programmable…