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5 Written Questions

5 Matching Questions

  1. Graphite (description of structure)
  2. SiO₂(name)
  3. Si (type)
  4. Graphite (structure)
  5. Ag (type)
  1. a Network solid (3-D)
  2. b layered, planar; can be described as a 2-dimensional lattice because covalent bonds occur only within sheets (planes) called graphenes; in each layer C atoms are arranged in a honeycomb-like lattice
  3. c metallic solid
  4. d
    Graphenes (layers) are weakly held together by LDFs. As far as LDFs go they are strong because graphene layers are flat and large.
  5. e Silicon dioxide, (aka) silica, (most commonly found in nature as) quartz

5 Multiple Choice Questions

  1. molecular solid
  2. amorphous solid
  3. graphite; diamond
  4. The smallest building block of a crystal, consisting of atoms, ions, or molecules, whose geometric arrangement defines a crystal's characteristic symmetry and whose repetition in space produces a crystal lattice.

5 True/False Questions

  1. glass (type)ionic solid


  2. NaCl (structure)


  3. Graphite (unit cell)


  4. allotropesmetallic solid


  5. SiC (structure)
    tetrahedral network


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