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AQA A Level Chemistry Year 1 | Alkenes Questions and Answers | 2025 Exam Practice

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This document contains Year 1 AQA A Level Chemistry questions and answers focused on alkenes, updated for the 2025 specification. It covers key concepts such as reactions of alkenes, mechanisms, stereoisomerism, and tests, supporting targeted exam practice and effective revision.

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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

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Uploaded on
January 17, 2026
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