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5 Written questions

5 Matching questions

  1. Graphite (type)
  2. Kr
  3. Graphite (structure)
  4. Diamond (type)
  5. SiO₂ (type)
  1. a
    Graphenes (layers) are weakly held together by LDFs. As far as LDFs go they are strong because graphene layers are flat and large.
  2. b Network Solid (3-D)
  3. c 2-D network solid
  4. d Network solid (3-D)
  5. e group 18 solid (aka atomic solid)

5 Multiple choice questions

  1. Formed from α-quartz at 846K.
  2. metallic solid
  3. graphite (2-D network solid)
    diamond (3-D network solid)
    coke (highly carbonaceous amorphic solid)
  4. different forms of crystal structure for the same solid material

5 True/False questions

  1. allotropesdifferent structural modifications of an element; bonding is different


  2. U (type)metallic solid


  3. SiC (type)Network solid (3-D)


  4. SiC (structure)
    tetrahedral network


  5. coke (type)amorphous solid


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