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Chapter 3 - PART I Focus on Solids Chapters 2,3,4,5 1 The...

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1 PART I: Focus on Solids Chapters: 2,3,4,5.
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2 The Structure of Crystalline Solids (Chapter 3) Crystals of gallium
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3 What you should understand by the end of this chapter: The ways atoms are arranged in a solid. How crystal structure is determined experimentally. The main types of crystal structure. Which materials exhibit which structures and why? A methodology for describing the structure of crystals. planes, directions The difference between crystalline and amorphous solids.
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4 Aluminum Rubber Glass Structure Changes Everything
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5 Bonding & Energy Solids form because atoms have lower overall energy when they’re close together (at low T) atoms give up energy as they approach each other attractive force, F A Electrostatic repulsion of outer electron shells repulsive forces, F R Net force F N = F A + F R
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6 Bonding & Energy Energy minimum energy is called the bond energy , E 0 bond length: + = + = = r R A R r r A N N E E dr F dr F dr F E 0 N r 0 dr dE =
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