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Alkanes in Motion Animations of gas-phase hydrocarbon systems show the motion of molecules.
Alkanes / Cycloalkanes |
Molecular Mechanics / Dynamics
Blue Bottle, Red and Blue Bottle Color changes are caused by reactions of oxygen in the air with chemicals in a solution. The colors fade over time, but can be regenerated by shaking the flask containing the solution.
Kinetics |
Mechanisms of Reactions |
Oxidation / Reduction
Induction by Iron(II) of the Oxidation of Iodide by Dichromate Acidic aqueous solutions containing dichromate and iodide ions are mixed with no reaction. The addition of a solution of iron(II) ion induces the rapid formation of brown triiodide ion.
the following mechanism has been proposed at high temperatures: (1) NO2 + CO O-N-O-C-O (slow) (2) O-N-O-C-O NO + CO2 (fast) Check the box for each species that is an intermediate in this mechanism.
Using Molecular Dynamics Simulation To Reinforce Student Understanding of Intermolecular ForcesPhillip R. Burkholder, Gordon H. Purser, and Renee S. Cole This article presents a series of experiments incorporating molecular dynamics simulations which predict the motion of chemical species based on the application of empirical rules and a physical analysis of the forces that act between the species. These motions can then be shown in vivid graphical form. Burkholder, Phillip R.; Purser, Gordon H.; Cole, Renee S. J. Chem. Educ.2008, 85, 1071.
Computational Chemistry |
Hydrogen Bonding |
Molecular Mechanics / Dynamics |
Physical Properties |
Solutions / Solvents
Dancing Crystals: A Dramatic Illustration of Intermolecular ForcesDonald W. Mundell Crystals of naphthalene form on the surface of an acetone solution and dance about in an animated fashion illustrating surface tension, crystallization, and intermolecular forces. Additional experiments reveal the properties of the solution and previous demonstrations of surface motion are explored. Mundell, Donald W. J. Chem. Educ.2007, 84, 1773.
Aromatic Compounds |
Liquids |
Molecular Mechanics / Dynamics |
Molecular Properties / Structure |
Physical Properties |
Surface Science |
Noncovalent Interactions
Molecular Model of ZinconWilliam F. Coleman The Featured Molecules this month are the tautomeric forms of the colorimetric reagent zincon. The structures could be used as an introduction to the concept of tautomerism, with students being asked to develop a definition of the term based on their observations of the difference(s) in linkage in the two forms. Coleman, William F. J. Chem. Educ.2007, 84, 305.
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.
Molecular Mechanics / Dynamics
Microscopic View of Chemical ReactionsEd Vitz, John W. Moore A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
NO + CO2 
