Describes an undergraduate kinetics experiment, including advantages of this particular system, sources of error, and expected results. (MLH)

Discusses the laboratory use of a titration end-point detection that relies on a temperature change rather than a color change. (MLH)

Details a laboratory experiment designed to extend the calcium PVC matrix membrane ion-selective electrode studies to complex formation equilibria. (Author/MA)

Describes a laboratory procedure to obtain nuclear magnetic resonance (NMR) values for common organic and inorganic groups. (CP)

The experiment described was developed for the third-year course in inorganic and analytical pharmaceutical chemistry to provide students with "hands-on" experience with high pressure liquid chromatography. Assay procedures are given along with experimental parameters and student results. (LBH)

Presented is a laboratory exercise that utilizes the natural yeast carbonation method of making homemade root beer to study fermentation and the effect of variables upon the fermentation process. There are photographs, a sample data sheet, and procedural hints included. (Author/MA)

Discusses selected bioinorganic aspects of carbonic anhydrase and describes experiments that will reinforce the students' understanding of the presence and essential role that metal ions have in some biological systems. (SL)

Describes an experiment for second year students designed to illustrate lectures devoted to electrochemistry and thermodynamics. (SL)

Describes an experimental arrangement for investigating optical barrier penetration. (SL)

Describes a simple activity designed to show the effects of leaching and evaporation on salts in the soil. (CP)

It is argued that research settings should be chosen with the whole experimental design in mind and that the availability of appropriate controls (groups or occasions for observation) should be as important as the suitability of the treatment group. (Author/AM)

The four BASIC programs described can be used to control experiments and facilitate classroom demonstrations and laboratory exercises in human memory, operant behavior, and visual discrimination. (RM)

Fifty-three research studies on feedback timing and verbal learning underwent meta-analysis. Applied studies using actual classroom quizzes and real learning materials found immediate rather than delayed feedback to be more effective; experimental studies of acquisition of test content indicate the opposite. Laboratory studies of list learning…

Described is a modified Fehling test and a modified corrected Benedict test. (RH)

Described is a simple demonstration that provides a way to determine if a given sample contains even a small fraction of superconducting material. The repulsion of the powder from a magnetic field is indicative of superconductivity. (RH)