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5 Written questions

5 Matching questions

  1. 2 allotropes of carbon
  2. α-quartz
  3. allotropes
  4. Diamond (structure)
  5. CO₂
  1. a molecular solid
  2. b
    The most common form of silica (SiO₂) in nature.
  3. c different structural modifications of an element; bonding is different
  4. d
    tetrahedral network
  5. e graphite; diamond

5 Multiple choice questions

  1. amorphous solid
  2. group 18 solid (aka atomic solid)

  3. tetrahedral network
  4. metallic solid

5 True/False questions

  1. NaCl (type)metallic solid


  2. Si (unit cell)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.


  3. Graphite (description of structure)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. polymorphsdifferent structural modifications of an element; bonding is different


  5. unit cell