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5 Written questions

5 Matching questions

  1. Graphite (description of structure)
  2. SiO₂ (type)
  3. Kr
  4. SiC (type)
  5. SiC (structure)
  1. a
    tetrahedral network
  2. b Network Solid (3-D)
  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 group 18 solid (aka atomic solid)
  5. e Network solid (3-D)

5 Multiple choice questions

  1. Silicon dioxide, (aka) silica, (most commonly found in nature as) quartz
  2. molecular solid
  3. 2-D network solid
  4. a regular, repeating array of atoms or ions

5 True/False questions

  1. 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.


  2. H₂ (type)molecular solid


  3. Silica (description of structure)has more polymorphs than almost any other structure


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


  5. CO₂group 18 solid (aka atomic solid)