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5 Written questions

5 Matching questions

  1. allotropes
  2. Graphite (structure)
  3. Pb (type)
  4. 2 allotropes of carbon
  5. Graphite (description of structure)
  1. a metallic solid
  2. b different structural modifications of an element; bonding is different
  3. c 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
  4. d graphite; diamond
  5. e
    Graphenes (layers) are weakly held together by LDFs. As far as LDFs go they are strong because graphene layers are flat and large.

5 Multiple choice questions

  1. Silicon dioxide, (aka) silica, (most commonly found in nature as) quartz
  2. has more polymorphs than almost any other structure

5 True/False questions

  1. glass (type)metallic solid

          

  2. Graphite (type)amorphous solid

          

  3. H₂O (type)molecular solid

          

  4. SiO₂ (type)Network Solid (3-D)

          

  5. unit cellThe 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.