Chemistry A-Level
rejecting alternatives
What rejecting alternatives means in Chemistry A-Level, as defined for AQA.
Definition of rejecting alternatives
Check what you remember
Read the wording for your board, then hide it and explain rejecting alternatives in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: AQA
Stating the formula that matches and rejecting the others with a reason, quoting the value that rules each one out.
Topics that use rejecting alternatives
- Mass spectrometry (AQA A-Level)
Related terms
- comparison to several decimal places
- high resolution
- isomers not distinguished
- molecular ion peak
- precise atomic masses
- candidate formulae
Using rejecting alternatives in the exam
Check the command word and mark scheme for your exact question. After comparing your explanation with the reference, use the term in an answer on the linked topic. This practice does not predict an exam mark.
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