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 Home > JCEDLib > QBank > Collection > CQs and ChPs > CQs > Writing CQs >
Writing Conceptual Questions (CQs): Modified Recall with Reason
Modify a recall question or an algorithmic calculation so it requires a student to give a qualitative answer; for example, a list of increasing or decreasing properties or "higher", "lower", or "no change". Then ask for a reason.

Example
Original recall question: Which set of conditions would give a reaction that is spontaneous under all conditions?
  1. Ho < 0, So < 0
  2. Ho = 0, So = 0
  3. Ho < 0, So > 0
  4. Ho > 0, So > 0
  5. Ho > 0, So < 0

A conceptual question with a reason: Each of the reactions below is spontaneous at 25oC when P = 1 atm. Which is (are) required to be exothermic?

  1. SO3(g) + H2O(l)   H2SO4(l)
  2. CaO(s) + CO2(g)   CaCO3(s)
  3. H+(aq) + OH-(aq)   H2O(l)
Explain your reasoning.

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