explorations - The Molecular Science Project Explorations...

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The Molecular Science Project Explorations Jump to the following Explorations: 3-D Angles K vs. Extent of Reaction Autoionization of Water Kinetics Crystalline Solids Lewis Structure and Bonding Tutorials Cycloalkanes: A Structural Study Methane Halogenation Animation Dynamic Equilibrium Organic Reaction Mechanisms GraphLab Phase Diagrams Hybridization Representations Introduction to Protein Structure WebSpectra New! Cal State Fullerton's FIPSE Project *includes automated assessment and animated tutorials* 3-D Angles Click image to view at full size. Visualizing three-dimensional structures is a major hurdle for chemistry students. Compounding the difficulty, chemists
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use three different concepts to imply geometry, although there is no obvious geometric information in two of them. The bond angle (a geometric construct) can be known from noting either the hybridization of the central atom (a quantum mechanical construct) or the coordination number (the number of other atoms bonded to the central atom). 3-D Angles uses pattern recognition principles introduced through rapid repeated exposure to three concepts to teach students to intuitively associate the three terms together in order to be able to correctly recognize the molecular structure from limited information. Platforms Windows 98, Me, 2000, or XP Current Version 2.0.1 (10/04/04) Setup Program 3-D_Angles_Setup.exe (1.56 MB; 1,642,670 bytes) Note: If you run 3-D Angles and the program's display appears blank, you need to obtain updated video card drivers that support the OpenGL graphics library. Send e- mail to Tim Su if you continue to have problems after you have done this. Developer Stephen Michael Schimpf top Autoionization of Water This exploration is an animation that requires the Shockwave plugin . It works with both Internet Explorer and Netscape, on both Mac and PC. Click here to see this animation top Crystalline Solids
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Click image to view at full size. Visualizing three-dimensional structures is a major hurdle for chemistry students. Many molecular modeling programs have been designed to assist visualizing organic structures; fewer exist for crystalline compounds. Crystalline Solids attempts to meet that need. The program provides easily manipulated three-dimensional models of fundamental crystal structures. Students can turn and rotate either single or multiple unit cells of any of the fourteen Bravis lattice structures. They can toggle between structures where the atoms are represented by small
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explorations - The Molecular Science Project Explorations...

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