Isomer definitions - quiz 3.0 / 5 based on 1 rating ? ChemistryIsomersA2/A-levelWJEC Created by: Tasha.LCreated on: 11-09-16 12:09 Define 'structural isomer'. They have the same molecular formula but a different structural formula. 1 of 7 Define 'chain-branching isomer'. They have the same molecular formula but a different arrangement of the carbon chain. 2 of 7 Define 'positional isomer'. They have the same structural formula and chain length, but differ in the position of their functional group. 3 of 7 Define 'functional isomer'. They have the same molecular formula but different functional groups. 4 of 7 Define 'stereo isomer'. They have the same molecular formula but a different arrangement of atoms in space. 5 of 7 Define 'geometric isomer'. They occur in alkenes only due to the restricted rotation about the double bond, caused by the pi bond. 6 of 7 Define 'optical isomer'. They have the same molecular formula but interact with plane polarised light differently. 7 of 7
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