Demonstrates how the incorporation of relatively low amounts of ionic material into nonionic polymers affects the structure and properties of these polymers. The extent to which properties are altered depends on dielectric constant of the backbone, position and type of ionic group, counterion type, ion concentration, and degree of neutralization.…

Describes some scientific concepts illustrated by and sources of Sterling engines. Includes an elementary version of their theory. (JN)

The application of molecular mechanics (a nonquantum mechanical method for solving problems concerning molecular geometries) to calculate force fields for n-butane and cyclohexane is discussed. Implications regarding the stable conformations of the example molecules are also discussed. (Author/SK)

Surveys the research of scientists like Joule, Kelvin, Maxwell, Clausius, and Boltzmann as it comments on the basic conceptual issues involved in the development of a more precise kinetic theory and the idea of a kinetic atom. (Author/SK)

Described is the use of an interactive terminal-oriented computing system that has access to files of thermodynamics data. (Author/SA)

Describes a typical relaxation kinetic experiment using a sudden increase in the temperature of the system. Time involved is described as minimal and the approach as quicker, more accurate, sensitive, and producing simultaneous determination of several thermodynamic parameters. (Author/SA)

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

Responds to the suggestion that computational tools be used in undergraduate thermodynamics courses. Argues that instead of using spreadsheets or specially prepared programs, students can quickly develop their own worksheets and solve problems using an equation-solving software program such as MATHCAD. Emphasis is on understanding the fundamentals…

Suggestions for the use of two different conventions in difference and rate terms in thermodynamics are made. It is shown how this approach lends itself to an accurate and concise discussion of function changes for a chemical reaction. (CW)

Considers pressure, volume, entropy, temperature, Helmholtz free energy, Gibbs free energy, enthalpy, and internal energy. Suggests the mnemonic diagram is for use with simple systems that are defined as macroscopically homogeneous, isotropic, uncharged, and chemically inert. (MVL)

Discusses advantages of the Stirling engine. Describes the details of constructing one from common materials, and its use for studying thermodynamics. (YP)

Develops a course which would give students a chance to think critically, be exposed to recent developments including applications to other fields, and be exposed to the general field of the philosophy of science. Provides a course outline, required and referenced textbooks, and selected journal articles. (YP)

Evaluates an elementary textbook (Journeys in Science, volume 3) on thermodynamics. Points out some inadequate expressions and explains the reasons. (YP)

Introduces an experiment involving the observation of Brownian motion for college students. Describes the apparatus, experimental procedures, data analysis and results, and error analysis. Lists experimental techniques used in the experiment. Provides a circuit diagram, typical data, and graphs. (YP)

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