AQA GCSE COMBINED SCIENCE TRILOGY 8464C1H Chemistry Paper 1H Mark scheme June 2019 Version 1.0

AQAaGCSEaCOMBINEDaSCIENCE:aTRILOGYa8464/C/1HaChemistryaPapera
1HaMSaJunea2020




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COMBINED SCIENCE: TRILOGYa a




8464/C/1H
Chemistry Paper 1H
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Mark scheme
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June 2020
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Version:a1.0aFinalaMarkaScheme




*206g8464c1h/MS*

, MARKaSCHEMEa–aGCSEaCOMBINEDaSCIENCE:aTRILOGYa–a8464/C/1Ha–aJUNEa2020



MarkaschemesaareapreparedabyatheaLeadaAssessmentaWriteraandaconsidered,atogetherawithathearelevanta
questions,abyaaapanelaofasubjectateachers.aThisamarkaschemeaincludesaanyaamendmentsamadeaatatheasta
ndardisationaeventsawhichaallaassociatesaparticipateainaandaisatheaschemeawhichawasausedabyathemainathisa
examination.aTheastandardisationaprocessaensuresathatatheamarkaschemeacoversatheastudents’aresponse
satoaquestionsaandathataeveryaassociateaunderstandsaandaappliesaitainatheasameacorrectaway.
Asapreparationaforastandardisationaeachaassociateaanalysesaaanumberaofastudents’ascripts.a Alternativeaan
swersanotaalreadyacoveredabyatheamarkaschemeaareadiscussedaandalegislatedafor.aIf,aafteratheastandardisa
tionaprocess,aassociatesaencounteraunusualaanswersawhichahaveanotabeenaraisedatheyaarearequiredatoaref
eratheseatoatheaLeadaExaminer.

Itamustabeastressedathataaamarkaschemeaisaaaworkingadocument,ainamanyacasesafurtheradevelopedaandae
xpandedaonatheabasisaofastudents’areactionsatoaaaparticularapaper.aAssumptionsaaboutafutureamarkasche
mesaonatheabasisaofaoneayear’sadocumentashouldabeaavoided;awhilstatheaguidingaprinciplesaofaassessme
ntaremainaconstant,adetailsawillachange,adependingaonatheacontentaofaaaparticularaexaminationapaper.


Furtheracopiesaofathisamarkaschemeaareaavailableafromaaqa.org.uk




Copyrightainformation

AQAaretainsatheacopyrightaonaallaitsapublications.aHowever,aregisteredaschools/collegesaforaAQAaareapermittedatoacopyamaterialafromathisabookletaforatheira
ownainternalause,awithatheafollowingaimportantaexception:aAQAacannotagiveapermissionatoaschools/collegesatoaphotocopyaanyamaterialathataisaacknowledge
datoaaathirdapartyaevenaforainternalauseawithinatheacentre.

Copyrighta©a2020aAQAaandaitsalicensors.aAllarightsareserved.




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, MARKaSCHEMEa–aGCSEaCOMBINEDaSCIENCE:aTRILOGYa–a8464/C/1Ha–aJUNEa2020



Information to Examiners
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1. General

Theamarkaschemeaforaeachaquestionashows:
 theamarksaavailableaforaeachapartaofatheaquestion
 theatotalamarksaavailableaforatheaquestion
 theatypicalaansweraoraanswersawhichaareaexpected
 extraainformationatoahelpatheaExamineramakeahisaoraherajudgement
 theaAssessmentaObjectives,alevelaofademandaandaspecificationacontentathataeachaquestionaisaintendedat
oacover.


Theaextraainformationaisaalignedatoatheaappropriateaanswerainathealeft-
handapartaofatheamarkaschemeaandashouldaonlyabeaappliedatoathataitemainatheamarkascheme.

Atatheabeginningaofaaapartaofaaaquestionaaareminderamayabeagiven,aforaexample:awhereaconsequentialama
rkinganeedsatoabeaconsideredainaaacalculation;aoratheaansweramayabeaonatheadiagramaoraataaadifferentaplac
eaonatheascript.

Inageneralathearight-
handasideaofatheamarkaschemeaisathereatoaprovideathoseaextraadetailsawhichaconfuseatheamainapartaofathea
markaschemeayetamayabeahelpfulainaensuringathatamarkingaisastraightforwardaandaconsistent.




2. Emboldening and underlining
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2.1 Inaaalistaofaacceptableaanswersawhereamoreathanaoneamarkaisaavailablea‘anyatwoafrom’aisaused,awithat
heanumberaofamarksaemboldened.aEachaofatheafollowingabulletapointsaisaa
potentialamark.

2.2 Aaboldaandaisausedatoaindicateathatabothapartsaofatheaansweraarearequiredatoaawardatheamark.

2.3 Alternativeaanswersaacceptableaforaaamarkaareaindicatedabyatheauseaofaor.aDifferentatermsainathea
markaschemeaareashownabyaaa/a;aegaallowasmootha/afreeamovement.

2.4 Anyawordingathataisaunderlinedaisaessentialaforatheamarkingapointatoabeaawarded.




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