Presents five experiments in which the unknowns for analysis are prepared by the students themselves, the analysis forming an essential part of the investigation. (MLH)

Describes experiments for the undergraduate organic chemistry laboratory which demonstrate reactions and syntheses that involve free - radical intermediates. (MLH)

Describes how to construct an isothermal calorimeter and lists typical results of a displacement reaction using zinc. (LS)

Describes features of agglutinin research utilizing the jack bean and suggests similar experiments for biology students that utilize more familiar plants. (LS)

Provides historical background on Pasteur's resolution of an optically active compound, and describes an undergraduate laboratory experiment in which optically active compounds are separated. (MLH)

Describes a laboratory experiment on geometrical optics designed for life science majors in a noncalculus introductory physics course. The thin lens equation is used by the students to calculate the focal length of the lens necessary to correct a myopic condition in an optical bench simulation of a human eye. (Author/MLH)

Presents information on a centrifugal force apparatus, signal averaging with a minicomputer, and the use of an air track. (MLH)

Describes a study which compared the exam scores of students who worked in groups to those of students who worked as individuals in an undergraduate organic laboratory course. Results showed that the group approach produced significantly higher exam scores for low achievers. (MLH)

Describes an undergraduate organic laboratory experiment involving the separation of an unknown solid organic acid and an unknown solid organic base. The experiment is designed to present the student with an unexpected difficulty, namely, the formation of a separable viscous liquid, to see how the student handles this difficulty. (MLH)

Describes a series of experiments which illustrate the analytical capabilities of fluorescence, and outlines two straightforward analyses involving real analyses. These experiments are suitable for an undergraduate instrumental analysis course and require approximately six to seven hours of laboratory time. (MLH)