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Splittgerber, A. G.; Chinander, L. L. – Journal of Chemical Education, 1988
Outlines a laboratory exercise that makes use of Beer's Law plots of cysteine constructed at several pH values over a broad range of wavelengths to estimate the tautomeric ratio (R) of two singly charged ionic forms, calculate the microscopic constants, and construct ultraviolet spectra for both light absorbing species. (CW)
Descriptors: Biochemistry, Chemistry, College Science, Higher Education

Johnstone, Alex H.; Letton, Kirsty M. – Journal of College Science Teaching, 1989
Examines the psychology of learning and its application to work in the laboratory. States that the working memory capacity of students is limited; therefore the amount of information they can process needs to be controlled and "recipe following" in the laboratory is perfectly reasonable. (RT)
Descriptors: Chemistry, College Science, Educational Research, Foreign Countries

Piszczek, L.; And Others – Journal of Chemical Education, 1988
Examines the usefulness of cyclic voltammetry to the determination of a complex compound's stoichiometry. Discusses the experimental design, laboratory equipment, and results. (CW)
Descriptors: Chemistry, College Science, Higher Education, Inorganic Chemistry

Pickering, Miles – Journal of Chemical Education, 1988
Criticizes the way organic chemistry teaching laboratory experiments are approached from the viewpoint of physical chemistry. Compares these experiments to cooking. Stresses that what matters is not the practice of the finger skills of organic chemistry but practice in the style of thinking of organic chemists. (CW)
Descriptors: College Science, Higher Education, Laboratory Procedures, Organic Chemistry

Sotheeswaran, Subramaniam – Journal of Chemical Education, 1988
Describes an experiment for undergraduate chemistry laboratories involving a chemical found in plants and some sea animals. Discusses collection and identification of material, a hemolysis test, preparation of blood-coated agar plates, and application of samples. (CW)
Descriptors: Botany, Chemistry, College Science, Higher Education

Ibanez, Jorge G.; And Others – Journal of Chemical Education, 1988
Describes experiments in which students prepare in situ soluble complexes of metal ions with different ligands and observe and estimate the change in formal potential that the ion undergoes upon complexation. Discusses student formation and analysis of soluble complexes of two different metal ions with the same ligand. (CW)
Descriptors: Chemistry, College Science, Higher Education, Inorganic Chemistry

Thompson, Robert Q. – Journal of Chemical Education, 1988
Describes a laboratory exercise in which acid dissociation constants and molecular weights are extracted from sample data and the sample is identified. Emphasizes accurate volumetric work while bringing to practice the concepts of acid-base equilibria, activity coefficients, and thermodynamic constants. (CW)
Descriptors: Acids, Chemical Analysis, Chemistry, College Science

Lieu, Van T.; Kalbus, Gene E. – Journal of Chemical Education, 1988
Describes an application of potentiometry to the determination of acidic and basic compounds in household cleaners in chemistry instruction. Discusses procedures and results of this experiment. (CW)
Descriptors: Chemical Analysis, Chemistry, College Science, Higher Education

Lord, Thomas R. – American Biology Teacher, 1990
Described is a study which was developed to find the proportion of cross-dominance in young adults. Procedures and statistical tests are discussed. The tasks used in the assessment of cross-dominance are described. Results indicated that all persons suffered from some cross-dominance. (CW)
Descriptors: Biology, Brain Hemisphere Functions, College Science, Genetics

Lunn, George; Sansone, Eric B. – Journal of Chemical Education, 1989
Chromium(VI) compounds are classified as oxidizers and must be specially packaged and transported for disposal while Cr(III) compounds are considered nonoxidizers. A process which reduces Cr(VI) to Cr(III) by adding sodium metabisulfite followed by neutralization with magnesium hydroxide is explored. (MVL)
Descriptors: Chemical Reactions, Chemistry, College Science, Environmental Standards

Turchi, Sandra L.; Weiss, Monica – Journal of Chemical Education, 1988
Describes an experiment to be performed in an undergraduate biochemistry laboratory that is based on a gradient centrifugation system employing a simple bench top centrifuge, a freezer, and frozen surcose gradient solution to separate macromolecules and subcellular components. (CW)
Descriptors: Biochemistry, Chemical Analysis, Chemistry, College Science

Martins, Luis J. A.; da Costa, J. Barbosa – Journal of Chemical Education, 1988
Describes a kinetic and mechanistic investigation of ascorbic acid by a substitution-inert complex in acidic medium suitable for the undergraduate level. Discusses obtaining the second order rate constant for the rate determining step at a given temperature and comparison with the value predicted on the basis of the Marcus cross-relation. (CW)
Descriptors: Chemistry, College Science, Higher Education, Kinetic Molecular Theory

Mulder, T.; Verdonk, A. H. – Journal of Chemical Education, 1984
Reports on a project in which observations of student and teaching assistant behavior were used to redesign a teaching unit on recrystallization. Comments on the instruction manual, starting points for teaching the unit, and list of objectives with related tasks are included. (JN)
Descriptors: Chemistry, College Science, Crystallography, Curriculum Development
International Atomic Energy Agency, Vienna (Austria). – 1983
Radiolabelled pesticides are used: in studies involving improved formulations of pesticides, to assist in developing standard residue analytical methodology, and in obtaining metabolism data to support registration of pesticides. This manual is designed to give the scientist involved in pesticide research the basic terms and principles for…
Descriptors: College Science, Laboratory Procedures, Laboratory Safety, Nuclear Energy

Lieu, Van T.; Kalbus, Gene E. – Journal of Chemical Education, 1988
Describes eight experiments involving the use of common consumer products that could be incorporated into quantitative and instrumental analysis laboratories. Discusses these activities in terms of illustration of principles, awareness, and critical thinking. (CW)
Descriptors: Chemistry, College Science, Critical Thinking, Higher Education
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