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Chapter 16

Chapter 16. Solids. The Crystalline State. All true solids are crystals. Crystals. A crystal is a lattice structure formed by a repeating, three-dimensional pattern of atoms, ions, or molecules. Amorphous Solids. An amorphous solid lacks an orderly repeating lattice structure.

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Chapter 16

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  1. Chapter 16 Solids

  2. The Crystalline State • All true solids are crystals.

  3. Crystals • A crystal is a lattice structure formed by a repeating, three-dimensional pattern of atoms, ions, or molecules.

  4. Amorphous Solids • An amorphous solid lacks an orderly repeating lattice structure.

  5. Crystals vs. Amorphous Solids

  6. Obsidian is a volcanic glass, meaning that the minerals from which it formed did not have time to crystallize due to rapid cooling.

  7. Obsidian is a volcanic glass, meaning that the minerals from which it formed did not have time to crystallize due to rapid cooling.

  8. Crystals vs. Amorphous Solids

  9. Crystals vs. Amorphous Solids

  10. Types of Crystals • The type of crystal is determined by the particles and attractive forces that make it up.

  11. Types of Crystals • Molecular Crystals • Ionic Crystals • Metallic Crystals • Network Crystals

  12. Molecular Crystal

  13. Ionic Crystal

  14. Metallic Crystal a

  15. Network Crystal (Macromolecule)

  16. Fiber Optics

  17. Fiber Optics

  18. Fiber Optics

  19. Ulexite “The TV Stone” • When viewed parallel to the fibers, Ulexite transmits light in a similar fashion to fiber optics.  It is this property that has given rise to it nickname of "TV" stone.

  20. Homework • Worksheet #34 “Temperature and Particle Motion” (due tomorrow). • Worksheet: Chapter 15 (due tomorrow). • Worksheet: Chapter 16 (due in two days).

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