Questions and answers for Mass spectrometry

Selection of different types of exam questions; recall and application, that students can use to check and evaluate their knowledge on mass spectrometry.
The questions are suitable for OCR A level Chemistry and for AQA AS Chemistry 7404.
Some of the questions could be used with GCSE Chemistry students as an extension.

The questions relate to the following:

  1. How does a Mass spectrometer work
  2. How molecular ion and fragment ions are formed
  3. Mass spectra of diatomic molecules (halogens)
  4. Uses of MS
  • Finding out the relative isotopic masses and relative abundances of the naturally occurring isotopes of an element – which allows to calculate the relative atomic mass, Ar for an element.
  • Finding the relative molecular mass of organic compounds and
    using fragmentation pattern to gain information about structure of organic compounds.
  • Using fragmentation patterns to identify organic compounds.
    Stretch and challenge: Mass spectra of organic halogen compounds, M+1 peak
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Created: Nov 3, 2019

Updated: Nov 11, 2019

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