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Gases : IDGasFromVelocity (8 Variations)
The following are graphs of molecular velocities versus the relative number of molecules for argon, chlorine, methane and xenon at 300K. Which graph is for argon?
Exploring Solid-State Structure and Physical Properties: A Molecular and Crystal Model ExerciseThomas H. Bindel This laboratory allows students to examine relationships among the microscopicmacroscopicsymbolic levels using crystalline mineral samples and corresponding crystal models. The exercise also reinforces Lewis dot structures, VSEPR theory, and the identification of molecular and coordination geometries. Bindel, Thomas H. J. Chem. Educ.2008, 85, 822.
Crystals / Crystallography |
Molecular Properties / Structure |
Molecular Modeling |
Solids |
VSEPR Theory |
Lewis Structures |
Physical Properties
Teaching Molecular Geometry with the VSEPR ModelRonald J. Gillespie The difficulties associated with the usual treatment of the VB and MO theories in connection with molecular geometry in beginning courses are discussed. It is recommended that the VB and MO theories should be presented only after the VSEPR model either in the general chemistry course or in a following course, particularly in the case of the MO theory, which is not really necessary for the first-year course. Gillespie, Ronald J. J. Chem. Educ.2004, 81, 298.
Covalent Bonding |
Molecular Properties / Structure |
Main-Group Elements |
Theoretical Chemistry |
VSEPR Theory |
MO Theory
Simplified Lewis Structure Drawing for Nonscience MajorsBarnabe B. Miburo Lewis structures are drawn using a simplified novel method with the following features: 1) the atoms used are brought in carrying all their valence electrons; 2) bonds are created by pairing up valence electrons between the central atoms and peripheric atoms; 3) anions are formed by addition of electrons to single electrons on appropriate atoms, while cations are formed by removal of single electrons. Miburo, Barnabe B. J. Chem. Educ.1998, 75, 317.
Multiple Bonds and Molecular ShapesEd Vitz, John W. Moore A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Molecular Properties / Structure
The Shapes of MoleculesEd Vitz, John W. Moore A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Molecular Properties / Structure
Monomer of KevlarWilliam F. Coleman The WebWare Molecules for July are from the paper Modern Sport and Chemistry: What a Chemically Aware Sports Fanatic Should Know by Giffin, Boone, Cole, McKay and Kopitzke.
