1 / 15

Solids

Solids. Image:Wikimedia Commons User Alchemistry -hp. Types of Solids. Crystalline Solids: highly regular arrangement of their components. Amorphous solids: considerable disorder in their structures (glass, plastic). Representation of Components in a Crystalline Solid.

munin
Download Presentation

Solids

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Solids Image:Wikimedia Commons User Alchemistry-hp

  2. Types of Solids • Crystalline Solids:highly regular arrangement of their components • Amorphous solids: considerable disorder in their structures (glass, plastic).

  3. Representation of Components in a Crystalline Solid Lattice: A 3-dimensional system of points designating the centers of components (atoms, ions, or molecules) that make up the substance.

  4. Bragg’s Law xy + yz = n and xy + yz = 2d sin n = 2d sin 

  5. Crystal Structures - Cubic Face-Centered Simple Body-Centered

  6. Crystal Structures - Monoclinic Simple End Face-Centered

  7. Crystal Structures - Tetragonal Body-Centered Simple

  8. Crystal Structures - Orthorhombic Simple End Face-Centered Body Centered Face Centered

  9. Crystal Structures – Other Shapes Rhombohedral Hexagonal Triclinic

  10. Closest Packing: Single Layer Photographer : Thierry Dugnolle

  11. Closest Packing: MultipleLayers Model: Packing uniform, hard spheres to best use available space. This is called closest packing. Each atom has 12 nearest neighbors.

  12. Metal Alloys • Substitutional Alloy: some metal atoms replaced by others of similar size. • brass = Cu/Zn

  13. Metal Alloys(continued) • Interstitial Alloy: Interstices (holes) in closest packed metal structure are occupied by small atoms. • steel = iron + carbon

  14. Network Atomic Solids Some covalently bonded substances DO NOT form discrete molecules. Diamond, a network of covalently bonded carbon atoms Graphite, a network of covalently bonded carbon atoms

  15. Molecular Solids Strong covalent forces within molecules Weak covalent forces between molecules Sulfur, S8 Phosphorus, P4

More Related