11.6. Properties of Solids and Intermolecular Attractions
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Plastic Sulfur Yellow powdered sulfur is heated until it becomes molten and brown. At first it flows freely, but then it becomes very viscous. Upon further heating, the viscous sulfur flows freely again and ignites. The burning liquid sulfur is poured into a beaker of water. When removed from the water, the sulfur is rubbery and flexible.
Polymeric, Metallic and Other Glasses in Introductory ChemistryStephen J. Hawkes Polymeric, metallic, and other glasses and their importance are described in a manner suitable for introductory chemistry. Hawkes, Stephen J. J. Chem. Educ.2008, 85, 1377.
Consumer Chemistry |
Materials Science |
Phases / Phase Transitions / Diagrams |
Solids
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.
London ForcesEd Vitz, John W. Moore A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Noncovalent Interactions
Intermolecular Forces (Netorials)Rachel Bain, Mithra Biekmohamadi, Liana Lamont, Mike Miller, Rebecca Ottosen, John Todd, and David Shaw Intermolecular Forces: this is a resource in the collection "Netorials". In this resource there is a review of Lewis structures, molecular geometry, electronegativity, or molecular polarity. After that, you can learn about the forces of attraction that exist between molecules. This module explores London forces and dipole-dipole forces (including hydrogen bonds). The Netorials cover selected topics in first-year chemistry including: Chemical Reactions, Stoichiometry, Thermodynamics, Intermolecular Forces, Acids & Bases, Biomolecules, and Electrochemistry.
Noncovalent Interactions
Electrostatics Attraction (GCMP)David M. Whisnant Electrostatics Attraction: this is a resource in the collection "General Chemistry Multimedia Problems". In this problem we will correlate molecular polarity with the attraction of liquids to a charged rod. General Chemistry Multimedia Problems ask students questions about experiments they see presented using videos and images. The questions asked apply concepts from different parts of an introductory course, encouraging students to decompartmentalize the material.
