Discusses the theory of resonance Raman (RR) spectroscopy as it applies to beta-carotene and lycopene pigments (found in tomatoes and carrots, respectively). Also discusses an experiment which demonstrates the theoretical principles involved. The experiment has been tested over a three-year period and has received excellent acceptance by physical…

Background, procedures used, and typical results are provided for an experiment in which students carry out the necessary measurements on the acid-catalysis of penicillin in two hours. By applying kinetic theory to the data obtained, the reaction pathways for the hydrolysis of potassium benzyl penicillin are elucidated. (JN)

Background information, procedures used, and typical results are provided for a solubility experiment. Among the 12 objectives of the experiment are: acquiring understanding of the terms "saturated,""unsaturated," and "supersaturated;" learning meaning of the expression "to approach equilibrium;" gaining experience in using laboratory equipment;…

Discusses two surface techniques: X-ray photoelectron spectroscopy (ESCA) and Auger electron spectroscopy (AES). Focuses on fundamental aspects of each technique, important features of instrumentation, and some examples of how ESCA and AES have been applied to analytical surface problems. (JN)

There are two conflicting views about the mechanism of 1,3-dipolar cycloadditions to multibonds. To reconcile these viewpoints a concerted, spin-paired, diradical mechanism, based on valence bond theory, is proposed. Each of these three mechanisms is discussed. (JN)

Traces the development of the Arrhenius equation from its beginning, examining the more important alternate proposals and the work that supported them. Aside from its historical interest, this examination affords insight into how scientific progress is made. (JN)

One effect of temperature is its influence on solubility, and that effect is used as a common example when teaching Le Chatelier's principle. Attempts to clarify the question of whether the principle holds in the case of the solubility of ionic compounds in water by investigating the literature data in detail. (JN)

Previous articles have dealt with the special problems arising when attempting to reduce reducible representations in continuous point groups. Current work, involving the programing of "projection operators" in connection with numerical computations, also shows the continuous groups to present special problems. These problems are discussed. (JN)

Discusses several characteristics considered to be important to a good undergraduate research program in chemistry. They include providing adequate time for students, proper selection of the research problem, a firm requirement that significant work will be performed, and a suitable format in presenting the research results. (JN)

An undergraduate research program in natural product synthesis was established at a small liberal arts college. Discusses program goals (including the total synthesis of maytansine), objectives, and accomplishments to date. Guidelines for establishing such programs are offered. (JN)

The benefits of undergraduate research programs for faculty members are described. Proposal strategies for new faculty, working in the undergraduate setting, and role of the senior faculty are the other major areas considered. (JN)

The involvement of undergraduate science majors in publishable research is a vital aspect of their education. The special problems confronted by faculty doing and directing such research are formidable. Several of these problems (such as heavy teaching loads) and ways of attacking them are described. (JN)

Examines programmatic effects of undergraduate chemistry research programs, focusing on internal research funding at Pomona College. The two-phase funding plan is described, accompanied by commentary on the reasoning and philosophy which lie behind these procedures. (JN)

Describes: Apple stereochemistry program; CNDO/2-INDO mini-computer calculations; direct linear plot procedure for enzyme kinetics calculations; construction of nonlinear Scatchard plots; simulation of mass spectral envelopes of polyisotopic elements; graphics with a dot-matrix printer; MINC computer in the physical chemistry laboratory; hallway…

Discusses various aspects related to nutrition and athletics. Examines nutritional requirements, energy use, carbohydrate loading, and myths and fallacies regarding food and athletic performance. Indicates that scientific evidence does not validate the use of any special diet by an athlete. (JN)