StudentLecture_23-24

StudentLecture_23-24 - CHM 11500, Lecture 23, 11/15/2010...

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CHM 11500, Lecture 23, 11/15/2010 Lab: Ch10, Models of the Solid State Reading: Sections 13.1-13.2 (pp. 588-599), 13.4 (pp. 602- 604). and Lab manual, Chapter 10, Models of the Solid State. URL for images: http://www.chem.purdue.edu/Courses/StructureLabs/ click on Crystal Explorer HW due Friday as usual Final Exam: 1-3 pm, Wednesday, December 15. Hall of Music
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CHM 11500, Lecture 23, 11/15/2010 Exam III, Monday, 11/22, 6:00 pm, Hall of Music. Reading Assignments and Learning Objectives for Lectures 15-22 or 23 (through polymers) Additional material in Lectures 15-22 or 23 Labs in Chapters 6, 7, 8 Help Session: Sunday, Nov. 21, 3 – 5 pm, WTHR 200
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Crystalline solids When most liquids are cooled, they eventually freeze and form crystalline solids , solids in which the atoms, ions, or molecules are arranged in a definite repeating pattern . Some solids (such as diamonds and the individual grains in sugar and table salt) are single crystals, but most common crystalline solids are aggregates of many small crystals. Common examples of the latter are sandstone, chunks of ice, granite, and metal objects.
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Space-filling model Structure of HCl, a crystalline solid below - 114 o C Ball & stick model
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Interparticle Forces Physical Behavior Atomic (Noble gases) Soft, very low mp, poor thermal & electrical conductors dispersion molecular Dispersion, dipole- dipole, H bonds Fairly soft, low to moderate mp, poor thermal & electrical conductors network Covalent bond Very hard, very high mp, usually poor thermal and electrical conductors metallic Metallic bond Soft to hard, low to very high mp, excellent thermal and electrical conductors,
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StudentLecture_23-24 - CHM 11500, Lecture 23, 11/15/2010...

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