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Using models to explain state changes

Quiz by Oak National Academy: GCSE Chemistry OCR Higher

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6 questions
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  • Q1
    Below, there are six different models for representing the bonding and structure in the compound ethane. Match the image to the correct type of model.
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    30s
  • Q2
    What do the dots and crosses typically represent in dot-and-cross diagrams?
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    30s
  • Q3
    Which of the following are limitations of the empirical formula when representing molecules?
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    30s
  • Q4
    Which model would not be appropriate to represent the bonding and/or structure in metals?
    dot-and-cross
    delocalised "sea" of electrons
    ball-and-stick
    space-filling
    30s
  • Q5
    What advantage does the ball-and-stick model have over the space-filling model?
    It clearly shows which atoms/ions have bonded.
    It is easier to see the overall shape of the substance.
    It is more accurate in depicting electron sharing.
    It shows the actual size of atoms more accurately.
    30s
  • Q6
    Which representation is most suitable for illustrating the arrangement of ions in a giant ionic lattice?
    displayed formula
    molecular formula
    empirical formula
    ball-and-stick model
    30s

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