Mark Scheme (Results)
November 2021
Pearson Edexcel GCE
In Chemistry (9CH0)
Paper 3: General and Practical Principles in
Chemistry
,Edexcel and BTEC Qualifications
Edexcel and BTEC qualifications come from Pearson, the world’s leading learning
company. We provide a wide range of qualifications including academic, vocational,
occupational and specific programmes for employers. For further information visit our
qualifications websites at www.edexcel.com or www.btec.co.uk for our BTEC
qualifications.
Alternatively, you can get in touch with us using the details on our contact us page at
www.edexcel.com/contactus.
If you have any subject specific questions about this specification that require the help
of a subject specialist, you can speak directly to the subject team at Pearson.
Their contact details can be found on this link: www.edexcel.com/teachingservices.
You can also use our online Ask the Expert service at www.edexcel.com/ask. You will
need an Edexcel username and password to access this service.
Pearson: helping people progress, everywhere
Our aim is to help everyone progress in their lives through education. We believe in
every kind of learning, for all kinds of people, wherever they are in the world. We’ve
been involved in education for over 150 years, and by working across 70 countries, jin
j100 jlanguages, jwe jhave jbuilt jan jinternational jreputation jfor jour jcommitment jto jhigh
jstandards jand jraising jachievement jthrough jinnovation jin jeducation. jFind jout jmore
jabout jhow jwe jcan jhelp jyou jand jyour jstudents jat: jwww.pearson.com/uk
November j2021
Question jPaper jLog jNumber j67806
jPublications jCode j9CH0_03_2111_MS
All j the j material j in j this j publication j is j copyright
© jPearson jEducation jLtd j2021
,General jMarking jGuidance
All jcandidates jmust jreceive jthe jsame jtreatment. jExaminers jmust jmark
jthe jfirst jcandidate jin jexactly jthe jsame jway jas jthey jmark jthe jlast.
Mark j schemes j should j be j applied j positively. j Candidates j must j be
j rewarded jfor j what j they j have j shown j they j can j do j rather j than
j penalised j for j omissions.
Examiners j should j mark j according j to j the j mark j scheme j not
j according j to jtheir jperception jof jwhere jthe jgrade jboundaries jmay
jlie.
There jis jno jceiling jon jachievement. jAll jmarks jon jthe jmark jscheme
jshould jbe jused jappropriately.
All j the jmarks jon j the jmark j scheme j are j designed jto j be j awarded.
j Examiners jshould j always j award j full j marks j if j deserved, j i.e. j if j the
j answer j matches j the jmark j scheme. j Examiners j should j also j be
j prepared j to j award j zero j marks j if jthe jcandidate’s jresponse jis jnot
jworthy jof jcredit jaccording jto jthe jmark jscheme.
Where jsome jjudgement jis jrequired, jmark jschemes jwill jprovide jthe
jprinciples j by j which j marks j will j be j awarded j and j exemplification
j may j be jlimited.
When j examiners j are j in j doubt j regarding j the j application j of j the j mark
j scheme jto ja jcandidate’s jresponse, jthe jteam jleader jmust jbe jconsulted.
Crossed jout jwork jshould jbe jmarked jUNLESS jthe jcandidate jhas jreplaced jit
j with jan jalternative jresponse.
Mark jschemes jwill jindicate jwithin jthe jtable jwhere, jand jwhich jstrands
jof jQWC, jare jbeing jassessed. jThe jstrands jare jas jfollows:
i) ensure j that j text j is j legible j and j that j spelling, j punctuation j and
j grammar j are jaccurate jso jthat jmeaning jis jclear
ii) select jand juse ja jform jand jstyle jof jwriting jappropriate jto jpurpose jand
jto jcomplex jsubject jmatter
iii) organise jinformation jclearly jand jcoherently, jusing jspecialist
jvocabulary jwhen jappropriate.
, Using jthe jmark jscheme
Examiners jshould jlook jfor jqualities jto jreward jrather jthan jfaults jto jpenalise. jThis jdoes jNOT jmean jgiving jcredit jfor jincorrect jor
jinadequate j answers, j but j it j does j mean j allowing j candidates j to j be j rewarded j for j answers j showing j correct j application j of
j principles j and jknowledge. j Examiners j should j therefore j read j carefully j and j consider j every j response: j even j if j it j is j not j what j is
j expected j it j may j be j worthy jof jcredit.
The j mark j scheme j gives j examiners:
an jidea jof jthe jtypes jof jresponse jexpected
how j individual j marks j are j to j be j awarded
the jtotal jmark jfor jeach jquestion
examples j of j responses j that j should j NOT j receive j credit.
/ j means j that j the j responses j are j alternatives j and j either j answer j should j receive j full j credit. j ( j ) j means j that j a j phrase/word j is j not
j essential j for jthe jaward jof jthe jmark, jbut jhelps jthe jexaminer jto jget jthe jsense jof jthe jexpected janswer.
Phrases/words jin jbold jindicate jthat jthe jmeaning jof jthe jphrase jor jthe jactual jword jis jessential jto jthe janswer. jecf/TE/cq j(error jcarried
jforward) jmeans jthat ja jwrong janswer jgiven jin jan jearlier jpart jof ja jquestion jis jused jcorrectly jin janswer jto ja jlater jpart jof jthe jsame
jquestion.
Candidates j must j make j their j meaning j clear j to j the j examiner j to j gain j the j mark. j Make j sure j that j the j answer j makes j sense. j Do j not
j give jcredit jfor jcorrect jwords/phrases jwhich jare jput jtogether jin ja jmeaningless jmanner. jAnswers jmust jbe jin jthe jcorrect jcontext.
Quality jof jWritten jCommunication
Questions j which j involve j the j writing j of j continuous j prose j will j expect j candidates j to:
write j legibly, j with j accurate j use j of j spelling, j grammar j and j punctuation j in j order j to j make j the j meaning j clear
select j and j use j a j form j and j style j of j writing j appropriate j to j purpose j and j to j complex j subject j matter
organise jinformation jclearly jand jcoherently, jusing jspecialist jvocabulary jwhen jappropriate.
Full j marks j will j be j awarded j if j the j candidate j has j demonstrated j the j above j abilities. j Questions j where j QWC j is j likely j to j be
j particularly jimportant jare jindicated j(QWC) jin jthe jmark jscheme, jbut jthis jdoes jnot jpreclude jothers.
November 2021
Pearson Edexcel GCE
In Chemistry (9CH0)
Paper 3: General and Practical Principles in
Chemistry
,Edexcel and BTEC Qualifications
Edexcel and BTEC qualifications come from Pearson, the world’s leading learning
company. We provide a wide range of qualifications including academic, vocational,
occupational and specific programmes for employers. For further information visit our
qualifications websites at www.edexcel.com or www.btec.co.uk for our BTEC
qualifications.
Alternatively, you can get in touch with us using the details on our contact us page at
www.edexcel.com/contactus.
If you have any subject specific questions about this specification that require the help
of a subject specialist, you can speak directly to the subject team at Pearson.
Their contact details can be found on this link: www.edexcel.com/teachingservices.
You can also use our online Ask the Expert service at www.edexcel.com/ask. You will
need an Edexcel username and password to access this service.
Pearson: helping people progress, everywhere
Our aim is to help everyone progress in their lives through education. We believe in
every kind of learning, for all kinds of people, wherever they are in the world. We’ve
been involved in education for over 150 years, and by working across 70 countries, jin
j100 jlanguages, jwe jhave jbuilt jan jinternational jreputation jfor jour jcommitment jto jhigh
jstandards jand jraising jachievement jthrough jinnovation jin jeducation. jFind jout jmore
jabout jhow jwe jcan jhelp jyou jand jyour jstudents jat: jwww.pearson.com/uk
November j2021
Question jPaper jLog jNumber j67806
jPublications jCode j9CH0_03_2111_MS
All j the j material j in j this j publication j is j copyright
© jPearson jEducation jLtd j2021
,General jMarking jGuidance
All jcandidates jmust jreceive jthe jsame jtreatment. jExaminers jmust jmark
jthe jfirst jcandidate jin jexactly jthe jsame jway jas jthey jmark jthe jlast.
Mark j schemes j should j be j applied j positively. j Candidates j must j be
j rewarded jfor j what j they j have j shown j they j can j do j rather j than
j penalised j for j omissions.
Examiners j should j mark j according j to j the j mark j scheme j not
j according j to jtheir jperception jof jwhere jthe jgrade jboundaries jmay
jlie.
There jis jno jceiling jon jachievement. jAll jmarks jon jthe jmark jscheme
jshould jbe jused jappropriately.
All j the jmarks jon j the jmark j scheme j are j designed jto j be j awarded.
j Examiners jshould j always j award j full j marks j if j deserved, j i.e. j if j the
j answer j matches j the jmark j scheme. j Examiners j should j also j be
j prepared j to j award j zero j marks j if jthe jcandidate’s jresponse jis jnot
jworthy jof jcredit jaccording jto jthe jmark jscheme.
Where jsome jjudgement jis jrequired, jmark jschemes jwill jprovide jthe
jprinciples j by j which j marks j will j be j awarded j and j exemplification
j may j be jlimited.
When j examiners j are j in j doubt j regarding j the j application j of j the j mark
j scheme jto ja jcandidate’s jresponse, jthe jteam jleader jmust jbe jconsulted.
Crossed jout jwork jshould jbe jmarked jUNLESS jthe jcandidate jhas jreplaced jit
j with jan jalternative jresponse.
Mark jschemes jwill jindicate jwithin jthe jtable jwhere, jand jwhich jstrands
jof jQWC, jare jbeing jassessed. jThe jstrands jare jas jfollows:
i) ensure j that j text j is j legible j and j that j spelling, j punctuation j and
j grammar j are jaccurate jso jthat jmeaning jis jclear
ii) select jand juse ja jform jand jstyle jof jwriting jappropriate jto jpurpose jand
jto jcomplex jsubject jmatter
iii) organise jinformation jclearly jand jcoherently, jusing jspecialist
jvocabulary jwhen jappropriate.
, Using jthe jmark jscheme
Examiners jshould jlook jfor jqualities jto jreward jrather jthan jfaults jto jpenalise. jThis jdoes jNOT jmean jgiving jcredit jfor jincorrect jor
jinadequate j answers, j but j it j does j mean j allowing j candidates j to j be j rewarded j for j answers j showing j correct j application j of
j principles j and jknowledge. j Examiners j should j therefore j read j carefully j and j consider j every j response: j even j if j it j is j not j what j is
j expected j it j may j be j worthy jof jcredit.
The j mark j scheme j gives j examiners:
an jidea jof jthe jtypes jof jresponse jexpected
how j individual j marks j are j to j be j awarded
the jtotal jmark jfor jeach jquestion
examples j of j responses j that j should j NOT j receive j credit.
/ j means j that j the j responses j are j alternatives j and j either j answer j should j receive j full j credit. j ( j ) j means j that j a j phrase/word j is j not
j essential j for jthe jaward jof jthe jmark, jbut jhelps jthe jexaminer jto jget jthe jsense jof jthe jexpected janswer.
Phrases/words jin jbold jindicate jthat jthe jmeaning jof jthe jphrase jor jthe jactual jword jis jessential jto jthe janswer. jecf/TE/cq j(error jcarried
jforward) jmeans jthat ja jwrong janswer jgiven jin jan jearlier jpart jof ja jquestion jis jused jcorrectly jin janswer jto ja jlater jpart jof jthe jsame
jquestion.
Candidates j must j make j their j meaning j clear j to j the j examiner j to j gain j the j mark. j Make j sure j that j the j answer j makes j sense. j Do j not
j give jcredit jfor jcorrect jwords/phrases jwhich jare jput jtogether jin ja jmeaningless jmanner. jAnswers jmust jbe jin jthe jcorrect jcontext.
Quality jof jWritten jCommunication
Questions j which j involve j the j writing j of j continuous j prose j will j expect j candidates j to:
write j legibly, j with j accurate j use j of j spelling, j grammar j and j punctuation j in j order j to j make j the j meaning j clear
select j and j use j a j form j and j style j of j writing j appropriate j to j purpose j and j to j complex j subject j matter
organise jinformation jclearly jand jcoherently, jusing jspecialist jvocabulary jwhen jappropriate.
Full j marks j will j be j awarded j if j the j candidate j has j demonstrated j the j above j abilities. j Questions j where j QWC j is j likely j to j be
j particularly jimportant jare jindicated j(QWC) jin jthe jmark jscheme, jbut jthis jdoes jnot jpreclude jothers.
