AQA A LEVEL CHEMISTRY PAPER 3
7405-3 2021 MARK SCHEME MS
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SCHEME MS
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A-level
CHEMISTRY
7405/3
Paper 3
Mark scheme
June 2021
Version: 1.0 Final
*216A74053/MS*
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MARK SCHEME – A-LEVEL CHEMISTRY – 7405/3 – JUNE 2021
Mark schemes are prepared by the Lead Assessment Writer and considered, together with the relevant
questions, by a panel of subject teachers. This mark scheme includes any amendments made at the
standardisation events which all associates participate in and is the scheme which was used by them in
this examination. The standardisation process ensures that the mark scheme covers the students’
responses to questions and that every associate understands and applies it in the same correct way.
As preparation for standardisation each associate analyses a number of students’ scripts. Alternative
answers not already covered by the mark scheme are discussed and legislated for. If, after the
standardisation process, associates encounter unusual answers which have not been raised they are
required to refer these to the Lead Examiner.
It must be stressed that a mark scheme is a working document, in many cases further developed and
expanded on the basis of students’ reactions to a particular paper. Assumptions about future mark
schemes on the basis of one year’s document should be avoided; whilst the guiding principles of
assessment remain constant, details will change, depending on the content of a particular examination
paper.
Further copies of this mark scheme are available from aqa.org.uk
Copyright information
AQA retains the copyright on all its publications. However, registered schools/colleges for AQA are permitted to copy material from this booklet for
their own internal use, with the following important exception: AQA cannot give permission to schools/colleges to photocopy any material that is
acknowledged to a third party even for internal use within the centre.
Copyright © 2021 AQA and its licensors. All rights reserved.
2
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7405-3 2021 MARK SCHEME MS
Your text here 1
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, AQA A LEVEL CHEMISTRY
PAPER 3 7405-3 2021 MARK
SCHEME MS
Downloaded by: academiamaster |
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, Y`[\dVZiaWf_]mgnlh
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Y[Z]oVnh_mWedafl\c`^X
hWij`_ft^daV̀[f̀ZVsrY\qpe
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[fYa`W]Z^ ZV\XfadW W[ZY_ ]a[WiỲgf_`eZY^
gVWcf[ai]d` WVcỲ\[ _f̀ieZY jY_fgZa[]oV
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A-level
CHEMISTRY
7405/3
Paper 3
Mark scheme
June 2021
Version: 1.0 Final
*216A74053/MS*
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, Stuvia.com - The Marketplace to Buy and Sell your Study Material
MARK SCHEME – A-LEVEL CHEMISTRY – 7405/3 – JUNE 2021
Mark schemes are prepared by the Lead Assessment Writer and considered, together with the relevant
questions, by a panel of subject teachers. This mark scheme includes any amendments made at the
standardisation events which all associates participate in and is the scheme which was used by them in
this examination. The standardisation process ensures that the mark scheme covers the students’
responses to questions and that every associate understands and applies it in the same correct way.
As preparation for standardisation each associate analyses a number of students’ scripts. Alternative
answers not already covered by the mark scheme are discussed and legislated for. If, after the
standardisation process, associates encounter unusual answers which have not been raised they are
required to refer these to the Lead Examiner.
It must be stressed that a mark scheme is a working document, in many cases further developed and
expanded on the basis of students’ reactions to a particular paper. Assumptions about future mark
schemes on the basis of one year’s document should be avoided; whilst the guiding principles of
assessment remain constant, details will change, depending on the content of a particular examination
paper.
Further copies of this mark scheme are available from aqa.org.uk
Copyright information
AQA retains the copyright on all its publications. However, registered schools/colleges for AQA are permitted to copy material from this booklet for
their own internal use, with the following important exception: AQA cannot give permission to schools/colleges to photocopy any material that is
acknowledged to a third party even for internal use within the centre.
Copyright © 2021 AQA and its licensors. All rights reserved.
2
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