Discusses a supplement to the "water to rose" demonstration in which a pink color is produced. Also discusses blood buffer demonstrations, including hydrolysis of sodium bicarbonate, simulated blood buffer, metabolic acidosis, natural compensation of metabolic acidosis, metabolic alkalosis, acidosis treatment, and alkalosis treatment. Procedures…

A two-stage synthesis of 4,6,8-trimethylazulene was developed for use in the undergraduate experiment, highlighting concepts not usually covered in the laboratory. The experiment requires purification procedures of chromatography and of sublimation and illustrates concepts of aromaticity, molecular orbital theory, and carbodium ion reactivity. (JN)

Describes an undergraduate organic chemistry experiment on the photochemical isomerization of maleic to fumaric acid. Background information, chemical reactions involved, and experimental procedures are included. (JN)

Conductiometric titrations can be used to simulate subduction-setting volcanism. Suggestions are made as to the use of this technique in teaching volcanic mechanisms and geochemical indications of tectonic settings. (JN)

Describes an experiment designed to teach temperature programed gas chromatography (TPGC) techniques and importance of derivatizing many classes of substrated to be separated. Includes equipment needed, procedures for making trimethylsilyl derivatives, applications, sample calculations, and typical results. Procedure required one, three-hour…

Electrography is a technique in which unknown metals are identified by the precipitates they form with known electrolytes. The technique illustrates both electrochemistry and precipitation reactions. Describes the technique, suggesting its use in science and forensic science classes. (JN)

Describes activities (demonstrations/experiments) used to introduce history of periodic properties--without electrons, orbitals, filling shells, or any conception of atoms beyond Dalton's model. Activities supplement first chapter in a currently available chemistry text. Indicates potential danger of experiments if proper safety precautions are…

Video games have a potential role in analysis of motor learning through laboratory tasks. This article discusses why games meet the requirements of laboratory tasks and suggests types of training and research that could be carried out using them. (PP)

Presents an experimental comparison of the efficacy of two neutron sources under conditions commonly used in laboratory experiments for demonstrating neutron activation of liquid samples. (Author)

Electrochemical studies can give insights into the chemical aspects of enzymatic and in vivo redox reactions of naturally occurring organic compounds. This is illustrated by studies of the electrochemical oxidation of the purinem uric acid. The discussion is limited to information at pH 7 or greater. (JN)

Highlights the major design decisions for educators who are planning a microcomputer-based learning laboratory. Drawings and tables showing sample layouts, hardware and software attributes, funding sources, and lists of microcomputer periodicals are included. (JJD)

Presents information, laboratory procedures, and results of an undergraduate experiment in which activity coefficients for a two-component liquid-vapor system are determined. Working in pairs, students can perform the experiment with 10 solutions in a given three-hour laboratory period. (Author/JN)

Discusses advantages of computer assisted instruction (CAI) in a community college writing/reading curriculum. Using word processing software, students write reports, themes, and essays on the microcomputer. Other software is used for learning vocabulary, grammar, reading rate and comprehension. Includes problems to avoid to ensure success in CAI…

A series of audiovisual presentations of laboratory techniques, instructions, and principles for intelligent operation of instrumentation have been developed. Discusses utilization of these slide/tapes educational benefits, and comparison with commercial tapes. Titles of the slide/tapes are provided. (Author/JN)

Urges the use of writing models in content area instruction to demonstrate to students exactly what they are asked to produce and suggests that content area faculty join forces with English faculty in the teaching of composition. (AEA)