AQA A Level Chemistry: Year 1- Alkenes
Questions and Answers 2025
WhatAisAanAalkene?A-ACORRECTAANSWERSA-AnAunsaturatedAhydrocarbon
WhatAisAanAunsaturatedAhydrocarbon?A-ACORRECTAANSWERSA-
AAcompoundAcontainingAonlyAcarbonAandAhydrogenAatomsAandAcontainingAatAleastAoneAca
rbonAcarbonAdoubleAbond
WhatAareAvanAderAWaalsAforces?A-ACORRECTAANSWERSA-
RelativelyAweakAintermolecularAforcesAcausedAbyAtemporaryAdipoleAdipoleAinteraction
WhatAisAtheAgeneralAformulaAforAanAalkene?A-ACORRECTAANSWERSA-CnH2n
HowAwouldAyouAnameAanAalkeneAgivenAitsAdisplayedAformula?A-ACORRECTAANSWERSA-
IdentifyAtheAlongestAcarbonAchainA
IdentifyAtheApositionAofAtheAcarbonAcarbonAdoubleAbondA
IdentifyAanyAsideAchains
WhatAareAstructuralAisomers?A-ACORRECTAANSWERSA-
MoleculesAwithAtheAsameAmolecularAformula,AbutAwithAdifferentAaAstructuralAformula
WhatAareAstereoisomers?A-ACORRECTAANSWERSA-
MoleculesAwithAtheAsameAmolecularAANDAstructuralAformulaAbutAaAdifferentA3DAarrangem
entAofAtheirAatomsAinAspace
WhatAisAE-ZAisomerism?A-ACORRECTAANSWERSA-
TheAhighestApriorityAgroupsAareAonAtheAsameAsideAofAtheAdoubleAbond
DescribeAtheAC=CAdoubleAbondA-ACORRECTAANSWERSA-DoubleAcovalentAbond
PlanarAbond
AreaAofAhighAelectronAdensity
HowAdoAyouAassignAtheAhighestApriorityAofAgroupsAinAE-ZAisomerism?A-
ACORRECTAANSWERSA-
TheAhighestAatomicAnumberAclosestAtoAtheAdoubleAbondAhasAtheAhighestApriorityA
IfAtwoAgroupsAhaveAe.g.AOnlyAcarbonAandAhydrogen,AthenAtheAoneAwithAtheAmostAcarbonAat
omsAisAassignedAtheAhighestApriority
WhatAareAZAisomers?A-ACORRECTAANSWERSA-
MoleculesAwhereAtheAhighestApriorityAgroupsAareAonAtheAsameAside
WhatAareAEAisomers?A-ACORRECTAANSWERSA-
MoleculesAwhereAtheAhighestApriorityAgroupsAareAonAoppositeAsides
WhatAisAadditionApolymerisation?A-ACORRECTAANSWERSA-
TheAreactionAbyAwhichAalkenesA(orAsubstitutedAalkenes)AreactAwithAotherAalkeneA(orAsubsti
tutedAalkene)AmoleculesAtoAformApolymers
WhatApolymerAwouldAtheAmonomerAetheneAform?A-ACORRECTAANSWERSA-Poly(ethene)
WhatAisAaApolymer?A-ACORRECTAANSWERSA-
AAlongAchainAofArepeatingAmonomerAunitsAjoinedAtogether
WhyAareAadditionApolymersAunreactive?A-ACORRECTAANSWERSA-
TheyAlackAtheAreactiveAcarbon-carbonAdoubleAbond
WhichAisAanAareaAofAhighAelectronAdensity
AndAsoAvulnerableAtoAelectrophilicAattack
Questions and Answers 2025
WhatAisAanAalkene?A-ACORRECTAANSWERSA-AnAunsaturatedAhydrocarbon
WhatAisAanAunsaturatedAhydrocarbon?A-ACORRECTAANSWERSA-
AAcompoundAcontainingAonlyAcarbonAandAhydrogenAatomsAandAcontainingAatAleastAoneAca
rbonAcarbonAdoubleAbond
WhatAareAvanAderAWaalsAforces?A-ACORRECTAANSWERSA-
RelativelyAweakAintermolecularAforcesAcausedAbyAtemporaryAdipoleAdipoleAinteraction
WhatAisAtheAgeneralAformulaAforAanAalkene?A-ACORRECTAANSWERSA-CnH2n
HowAwouldAyouAnameAanAalkeneAgivenAitsAdisplayedAformula?A-ACORRECTAANSWERSA-
IdentifyAtheAlongestAcarbonAchainA
IdentifyAtheApositionAofAtheAcarbonAcarbonAdoubleAbondA
IdentifyAanyAsideAchains
WhatAareAstructuralAisomers?A-ACORRECTAANSWERSA-
MoleculesAwithAtheAsameAmolecularAformula,AbutAwithAdifferentAaAstructuralAformula
WhatAareAstereoisomers?A-ACORRECTAANSWERSA-
MoleculesAwithAtheAsameAmolecularAANDAstructuralAformulaAbutAaAdifferentA3DAarrangem
entAofAtheirAatomsAinAspace
WhatAisAE-ZAisomerism?A-ACORRECTAANSWERSA-
TheAhighestApriorityAgroupsAareAonAtheAsameAsideAofAtheAdoubleAbond
DescribeAtheAC=CAdoubleAbondA-ACORRECTAANSWERSA-DoubleAcovalentAbond
PlanarAbond
AreaAofAhighAelectronAdensity
HowAdoAyouAassignAtheAhighestApriorityAofAgroupsAinAE-ZAisomerism?A-
ACORRECTAANSWERSA-
TheAhighestAatomicAnumberAclosestAtoAtheAdoubleAbondAhasAtheAhighestApriorityA
IfAtwoAgroupsAhaveAe.g.AOnlyAcarbonAandAhydrogen,AthenAtheAoneAwithAtheAmostAcarbonAat
omsAisAassignedAtheAhighestApriority
WhatAareAZAisomers?A-ACORRECTAANSWERSA-
MoleculesAwhereAtheAhighestApriorityAgroupsAareAonAtheAsameAside
WhatAareAEAisomers?A-ACORRECTAANSWERSA-
MoleculesAwhereAtheAhighestApriorityAgroupsAareAonAoppositeAsides
WhatAisAadditionApolymerisation?A-ACORRECTAANSWERSA-
TheAreactionAbyAwhichAalkenesA(orAsubstitutedAalkenes)AreactAwithAotherAalkeneA(orAsubsti
tutedAalkene)AmoleculesAtoAformApolymers
WhatApolymerAwouldAtheAmonomerAetheneAform?A-ACORRECTAANSWERSA-Poly(ethene)
WhatAisAaApolymer?A-ACORRECTAANSWERSA-
AAlongAchainAofArepeatingAmonomerAunitsAjoinedAtogether
WhyAareAadditionApolymersAunreactive?A-ACORRECTAANSWERSA-
TheyAlackAtheAreactiveAcarbon-carbonAdoubleAbond
WhichAisAanAareaAofAhighAelectronAdensity
AndAsoAvulnerableAtoAelectrophilicAattack