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H1 S10 - ENME 382 Homework 1 Due Friday Feb 5 2010 1...

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ENME 382 Homework 1 Due: Friday, Feb. 5, 2010 1. Predict the type of bonding that holds the atoms/molecules together in the following solid materials. Explain why you have made the prediction for each material. Where appropriate include calculations. CaO CdS FeO Bronze (a copper rich copper-tin alloy) Solid neon Polyisoprene (a type of rubber) AlP 2a) Make a table with the melting point, elastic modulus, CTE, and density for Sn, Au and W. Reference your source(s) for the information. Briefly discuss how these properties relate to bonding. b) On the same nested schematic diagram sketch potential well diagrams for Ag, Au and W. Give a brief explanation for the relative location and shape of each curve. c) Briefly indicate how this schematic diagram could help you select a material for a specific application. 3. Callister 3.2. Show that the atomic packing factor for BCC is 0.68. 4. Callister 3.6 Using atomic weight, crystal structure, and atomic radius data tabulated inside the front cover, compute the theoretical densities of aluminum, nickel, magnesium, and tungsten, and then
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