Described is an advanced undergraduate kinetics experiment using buffer dilutions to determine spontaneous rate, catalyzed rate, and reaction order. The reaction utilized is hydrolysis of p-nitro-phenyl acetate in presence of imidazole, which has been shown to enhance rate of the reaction. (Author/JN)

Describes ways to modify teaching aids and laboratory materials for the visually handicapped student in an introductory college chemistry course. (CS)

Supplies short descriptions of several computer applications in the college science classroom and laboratory, including: applications; interfacing and data collection with the TRS-80; programs for activity corrections in acid/base and precipitation titration curve calculations; computer-assisted data analysis of enzyme kinetics; and microcomputer…

Background information and experimental procedures are provided for three lecture-demonstrations (involving hydrolysis of tetra-butyl chloride) illustrating: (1) common-ion or mass law effect; (2) effect of changing ionizing power of a solvent on a solvolysis reaction; and (3) collecting/plotting data to illustrate a first-order reaction.…

A teacher of deaf high school students describes considerations in developing a computer lab, including equipment selection, class and subject scheduling, and suitable software. Examples of software used in his lab are cited, including Mathware's Math City and Apple's SUPERMATH program. (CL)

Describes a sequence of experiments developed at Texas A&M University for use in one-semester and two-semester (nonmajors) organic chemistry courses to teach a maximum number of separation and purification techniques such as distillations, recrystallization, liquid-liquid extraction, and chromatography. (SK)

Describes a synthetic organic laboratory experiment which ensures independence of students but is not excessively demanding of instructor time. Each student is provided with different starting materials to prepare different flavones but use the same general procedure, the "organic synthesis" flavone preparation. Various features of this procedure…

Reviews the development of accelerators over the past 50 years. Topics include: types of accelerators, including cyclotrons; sociology of accelerators (motivation, financing, construction, and use); impact of war; national laboratories; funding; applications; future projects; foreign projects; and international collaborations. (JN)

This report reviews some goals for laboratory activities in contemporary science teaching, discusses an investigation that analyzed and compared laboratory activities from two major physics guides, and discusses the implications of the goals and analysis for physics teaching. Six major deficiencies in the two laboratory handbooks are identified.…

Describes a funding simulation for use with college students in an advanced experimental psychology laboratory. Students write an original research paper and submit it to the professor--the "funding agency"--as a grant proposal. Projects are funded with grade points with which the student director purchases help from unfunded classmates. (RM)

Describes the features and operation of an inexpensive digital pH meter. Includes a schematic diagram of the pH meter and a parts list with cost and source of each part. (SK)

Describes procedures and semi-micro reaction apparatus (carbon dioxide trap) to demonstrate how a particular enzyme (L-Glutamic acid decarboxylase) may be used to determine the site or sites of labeling in its substrate (carbon-14 labeled glutamic acid). Includes calculations, solutions, and reagents used. (Author/SK)

An experimental technique to develop inferential thinking in less scientifically-oriented community college students is described. Students activate unlabeled gas discharge tubes and identify the gases by comparing color photographs with spectrometer observations. Includes methods for taking color photographs of spectra. (SK)

Discusses the need for ships enabling researchers to work in rough weather, thus expanding research capabilities; suggests a prototype semisubmerged ship which would meet research requirements. (DC)

Student activities and experimental procedures are described for an experiment using black and white photographic development to illustrate the determination of reaction rate, kinetic order of a reactant, and activation energy. (Author/SK)