Outlines an approach for instruction in a physical chemistry laboratory which combines traditional and project-like experiments. An outline of laboratory experiments and examples of project-like experiments are included. (BT)

An experiment is presented on the formulation of a negative photoresist. It is intended for use as a fifteen minute classroom demonstration for undergraduate general chemistry students. (SA)

Describes an experiment, designed for and tested in an advanced inorganic laboratory methods course for college seniors and graduate students, that prepares and analyzes several samples in the nearly ideal potassium perchlorate-permanganate solid solution series. The results are accounted for by a theoretical treatment based upon aqueous…

Describes an experiment that, using a commercially available solid-state selective electrode in conjunction with a pH-meter, determines the stability constants of sodium sulfate while varying the ionic strength of the media using sodium chloride. Detailed reproducible procedures of both the measurements and calculations are described. (BT)

An inexpensive apparatus for demonstrating low temperature mineral synthesis in an undergraduate geology laboratory is described. (Author/SA)

Recommendations are given for obtaining high quality preparations of chromosomes with relatively little equipment using an improved Feulgen-squash technique. (Authors/SA)

Presents a method for microscopically examining cytoplasmic streaming in root cells, and physiologically examining the delivery of ions to the xylem exudate. The expected result does not occur and the authors believe that students learn to re-examine the assumptions, thereby increasing their skills in scientific inquiry. (Authors/SA)

Presents a series of laboratory exercises designed to introduce students to a realistic experience in biological research that is feasible with large numbers of beginning biology majors. The exercises center on the study of alkaline phosphatase. (DDR)

Describes an educational program that asks students to attempt to prove that the earth is spherical and that it rotates. Presents tips to pique student interest and charts related to sensing the spin, nonrotation notions, flat earth fallacies, evidence that the earth is spherical and rotates, and the role of watersheds in proving that the earth…

Describes a simulation done by students in a Year 4 undergraduate physics laboratory course on pulse technology. The course objective was to provide students with experience in computation pulsed electrical circuits and in comparing the computation with experiments. Results showed that the microcomputer simulated experiments made for a more…

Presents an activity that can be an effective way to teach the key concepts of density, specific gravity, miscibility, and immiscibility without expensive reagents or equipment. Includes pre-laboratory discussion tips and student laboratory worksheets. (DDR)

Errors found in a common physics experiment to measure acceleration resulting from gravity using a linear air track are investigated. Glider position at release and initial velocity are shown to be sources of systematic error. (CW)

Described is an color-making activity where students use food coloring, eyedroppers, and water to make various colored solutions. Included are the needed materials and procedures. Students are asked to write up the formulas for making their favorite color. (KR)

Described is an experiment which may be carried out quickly using tungsten-filament irradiation. Materials, experimental procedures, and results are discussed. Procedures for filtration on silica gel are appended. (CW)

Safety issues specifically related to the analytical laboratory are discussed including hazardous reagents, transferring samples, cleaning apparatus, eye protection, and equipment damage. Special attention is given to techniques which not only endanger the technician but also endanger expensive equipment. (CW)