Described is the laboratory program for a second-year chemistry class at a Wisconsin high school. The laboratory stresses student-designed labs. Examples of topics considered are included. (RH)

Presented are the materials and a procedure for demonstrating the levitation of a magnet above a superconducting material. The demonstration can be projected with an overhead projector for a large group of students. Kits to simplify the demonstration can be purchased from the Institute for Chemical Education of the University of Wisconsin-Madison.…

Presents a set of laboratory experiments that can assist students in the detection of carbon dioxide. Offers a variation of the supported drop method of carbon dioxide detection that provides readily visible positive results. Includes background information on carbon dioxide. (ML)

Describes a relatively simple method of extraction and purification of bacterial DNA. This technique permits advanced secondary-level science students to obtain adequate amounts of DNA from very small pellets of bacteria and to observe some of its polymer properties. (ML)

The philosophy, structure, and organization of a chemical engineering (ChE) process laboratory are discussed. The laboratory emphasizes the oral and communication skills of students who are part of groups that resemble an industrial process research and development group. An annotated list of students' experimental projects is included. (JN)

Describes an experiment where equal parts of copper and aluminum are heated then cooled to show extremely large crystals. Suggestions are given for changing the orientation of crystals by varying cooling rates. Students are more receptive to concepts of microstructure after seeing this experiment. (DH)

In psychology, experimental studies are susceptible to the biases of the investigator in problem formulation, operationalization, sample selection, and data interpretation. Thus, what we regard as an objective, value-free approach to science is neither unbiased nor value-free. (GC)

Describes a set of laboratory experiments designed for a chemistry course revised for non-chemistry students. (MLH)

Describes an instrumental analysis experiment that utilizes spectrofluorimetry to determine as little as 0.02 percent glycine in commercial dietetic beverages. (MLH)

Describes the theory and performance of a diffusion experiment based on the free boundary method. Suitable for biochemistry and microbiology students taking physical chemistry. (MLH)

Describes a set of laboratory experiments that illustrate proteolytic enzyme action and specific properties of bromolain, including some insights into the active site mechanism of peptide hydrolysis. (MLH)

Describes two laboratory experiments involving metal ions and porphyrin ligands. (MLH)

Describes a technique by which room temperature phosphorescence of simple organic molecules can be demonstrated in the lecture hall or laboratory. (MLH)

Presents a kinetic study that utilizes a method for varying the concentrations of the possible Ce(IV) species and computing the concentration distribution of the sulfato and hydroxo species of Ce(IV). (MLH)

Describes several spectral experiments utilizing nuphthalene derivatives that display room-temperature phospharescence. (MLH)