Develops the concept of oscillatory v dissipative limits as it applies to electronic excited state processes in molecular systems. Main emphasis is placed on the radiative and nonradiative dynamics of the excited state of a molecule prepared by interaction with light or some other excitation source. (BT)

Describes the use of computer-assisted graphical displays in experiments to determine the order and activation energy for a chemical reaction. (MLH)

Describes a kinetic simulation computer program that generates experimental data for use in an instructional program on the design of experiments and the analysis of results. (MLH)

Describes a simple and graphic demonstration of molecular motion that utilizes a hot plate, a beaker, tap water, India ink, and a Pasteur pipette with a rubber bulb. Provides tips on guiding students to an understanding of molecular motion using this demonstration. (DDR)

Presents a science activity designed to involve students in experimental procedures such as data collection and analysis by extracting peroxidase from plant sources. (YDS)

The design and data management of an activity to study weathering by increasing the rate of mineral dissolution in a microwave oven is described. Data analysis in terms of parabolic and first-order kinetics is discussed. (CW)

Describes an organic chemistry experiment for teaching the basic concepts of chemical kinetics. Provides background information about first- and second-order reactions, experimental procedures of the Diels-Alder reaction between cyclopentadiene and dimethyl fumarate, and the experimental results. (YP)

Explores the power transfer using (1) a simple electric circuit consisting of a power source with internal resistance; (2) two different mechanical systems (gravity driven and constant force driven); (3) ecological examples; and (4) a linear motor. (YP)

Discusses the average speed differences between hydrogen and oxygen molecules contained in a jar. (YP)

Discusses Newton's idea of predicting very high temperatures of objects by observing the time needed for the object to cool to some standard reference temperature. This article discusses experimental deviations from this idea and provides explanations for the observed results. (MVL)

Examines problems that commonly appear in the definition and discussion of work in physics textbooks. Presents the work-energy theorem, provides examples contradicting erroneous statements often found in textbook, and discusses the inconsistent terminology utilized with respect to force and work. (MDH)

Uses the context of sports surfaces to discuss the qualities of a surface that will produce a shock-absorbing effect. Discusses experiments to measure the shock-absorbing properties from two theoretical perspectives. Describes necessary equipment for the experiments. (MDH)

Discusses the use of pantomime to arouse student interest and promote foreign language acquisition, providing several examples demonstrating the inclusion of mimetic activities for teaching about culture and grammar, introducing new vocabulary, and testing. (33 references) (Author/CB)

Activities involving concave rubber disks are utilized to illustrate the scientific principles of kinetic and potential energy. Provides teacher instructions and questions related to the activity. (MDH)