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Alkanes in Motion Animations of gas-phase hydrocarbon systems show the motion of molecules.

Alkanes / Cycloalkanes |

Molecular Mechanics / Dynamics

Exploding Soap Bubbles: Hydrogen + Oxygen A series of three videos shows that as the ratio of oxygen to hydrogen in soap bubbles increases, the explosions that occur when the bubbles are ignited get louder. (The fact that with an excess of oxygen the explosions would become softer again is not shown.) Each video is repeated with no voice-over so that only the sounds of the explosions are heard. Five still images are provided to show the stoichiometry on the molecular scale. The videos are intended to be shown in order beginning with Hydrogen Alone and ending with hydrogen plus more oxygen.

Thermodynamics : ProbabilityEnergyDist (23 Variations)
Consider a system that has two indistinguishable molecules that can occupy three different energy levels (having energies of 1kJ, 2kJ and 3kJ, respectively). What is the probability that the molecules will have a total energy of 2 kJ?

Using Graphs of Gibbs Energy versus Temperature in General Chemistry Discussions of Phase Changes and Colligative PropertiesRobert M. Hanson, Patrick Riley, Jeff Schwinefus, and Paul J. Fischer The use of qualitative graphs of Gibbs energy versus temperature is described in the context of chemical demonstrations involving phase changes and colligative properties at the general chemistry level. Hanson, Robert M.; Riley, Patrick; Schwinefus, Jeff; Fischer, Paul J. J. Chem. Educ.2008, 85, 1142.

Phases / Phase Transitions / Diagrams |

Physical Properties |

Thermodynamics

Disorder and Chaos: Developing and Teaching an Interdisciplinary Course on Chemical DynamicsSteven G. Desjardins Describes an interdisciplinary course for nonscience majors that introduces ideas about mathematical modeling using examples based on pendulums, chemical kinetics, and population dynamics. Students learn about the nature of measurement and prediction through the use of spreadsheet software for the solution of equations and experimental data collection. Desjardins, Steven G. J. Chem. Educ.2008, 85, 1078.

Kinetics |

Mathematics / Symbolic Mathematics |

Nonmajor Courses

Degree of Mathematics Fluency and Success in Second-Semester Introductory ChemistryDoreen Geller Leopold and Barbara Edgar Students' scores on a diagnostic mathematics assessment administered in an introductory chemistry course required for science and engineering majors were found to correlate with success in the course. Mathematical and pedagogical misconceptions highlighted by these results are discussed, as are possible methods for enhancing students' mathematics skills. Leopold, Doreen Geller; Edgar, Barbara. J. Chem. Educ.2008, 85, 724.

Thermodynamic Probability W and EntropyEd Vitz, John W. Moore A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.

Thermodynamics |

Statistical Mechanics

Dependence of S on Molecular StructureEd Vitz, John W. Moore A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.

Molecular Mechanics / Dynamics

Some Trends In Entropy ValuesEd Vitz, John W. Moore A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.