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Showing 346 to 353 of 353 results Save | Export
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Diemente, Damon – Journal of Chemical Education, 1998
Describes three calculations used to make students aware of the size of Avogadro's number: (1) the new size of a 6-inch diameter ball with volume increased by a factor of Avogadro's number; (2) the number of moles of sand grains in the Sahara Desert; and (3) the dimensions and length of a mole of hydrogen atoms shaped into a cube, a square, and a…
Descriptors: Chemistry, Estimation (Mathematics), High Schools, Higher Education
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Hansen, Peter J.; Jurs, Peter C. – Journal of Chemical Education, 1988
Discusses the use of graph theory to aid in the depiction of organic molecular structures. Gives a historical perspective of graph theory and explains graph theory terminology with organic examples. Lists applications of graph theory to current research projects. (ML)
Descriptors: Chemical Nomenclature, Chemistry, College Science, Graduate Study
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Thompson, H. Bradford – Journal of Chemical Education, 1987
Discusses the loss of precision that normally results in solving equilibrium problems, particularly as presented through the use of quadratic formulas in most introductory college chemistry textbooks. Provides examples of demonstrations. (TW)
Descriptors: Chemical Equilibrium, Chemistry, College Science, Demonstrations (Educational)
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Kean, Elizabeth; And Others – Journal of Chemical Education, 1988
Describes teaching strategies that help students improve problem solving skills. Lists three factors good problem solvers were found to possess. Gives step by step instructions for solving problems. (MVL)
Descriptors: Algorithms, Chemistry, College Science, Heuristics
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Moore, John W., Ed. – Journal of Chemical Education, 1989
Presents five computer programs: (1) Accurate Numerical Solutions of the One-Dimensional Schrodinger Equation; (2) NMR Simulation and Interactive Drill/Interpretation; (3) A Simple Computer Program for the Calculation of 13C-NMR Chemical Shifts; (4) Constants of 1:1 Complexes from NMR or Spectrophotometric Measurements; and (5) Saturation…
Descriptors: Chemistry, College Science, Computer Graphics, Computer Simulation
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Macca, Carlo – Journal of Chemical Education, 1986
Discusses the use of ratio diagrams, which plot the calculations of equilibrium concentrations of the species of the carbonate system. Provides examples to describe how these diagrams can be used to illustrate the behavior systems of interest in volumetric analysis, where absorption or loss of carbon dioxide takes place. (TW)
Descriptors: Chemical Equilibrium, Chemistry, College Science, Diagrams
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Rusling, James F. – Journal of Chemical Education, 1988
Investigates minimizing errors in computational methods commonly used in chemistry. Provides a series of examples illustrating the propagation of errors, finite difference methods, and nonlinear regression analysis. Includes illustrations to explain these concepts. (MVL)
Descriptors: Chemistry, College Science, Computation, Computer Uses in Education
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Poole, Richard L. – Journal of Chemical Education, 1989
Presents a method to teach stoichiometry where a problem is broken down into four factors and two cycles. Offers grams of known, moles of known, moles of unknown, and grams of unknown as the factors. Uses factor labeling as the second cycle. (MVL)
Descriptors: Chemical Analysis, Chemical Nomenclature, Educational Strategies, Instruction
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