Chemistry A-Level
first point of difference
What first point of difference means in Chemistry A-Level, as defined for AQA.
Definition of first point of difference
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Reference: AQA
If the two attached atoms are the same element, moving one atom further out along each branch and comparing the sets of atoms found.
Topics that use first point of difference
- Isomerism (AQA A-Level)
Related terms
- atomic number comparison
- CIP priority rules
- E and Z isomers
- E-Z isomerism
- Optical isomerism
- restricted rotation
- stereoisomers
- structural isomer
Using first point of difference in the exam
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