GCSE
COMBINED SCIENCE: TRILOGY 8464/C/2H
Chemistry Paper 2H
Mark scheme
June 2025
Version: 1.0 Final
, MARK SCHEME – GCSE COMBINED SCIENCE: TRILOGY – 8464/C/2H –
JUNE 2025
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.
No student should be disadvantaged on the basis of their gender identity and/or how they
refer to the gender identity of others in their exam responses.
A consistent use of ‘they/them’ as a singular and pronouns beyond ‘she/her’ or ‘he/him’ will be
credited in
exam responses in line with existing mark scheme criteria.
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
2
, MARK SCHEME – GCSE COMBINED SCIENCE: TRILOGY – 8464/C/2H –
JUNE 2025
materia l that is acknowledged to a third party even for internal use within the centre.
Copyright © 2025 AQA and its licensors. All rights reserved.
3
COMBINED SCIENCE: TRILOGY 8464/C/2H
Chemistry Paper 2H
Mark scheme
June 2025
Version: 1.0 Final
, MARK SCHEME – GCSE COMBINED SCIENCE: TRILOGY – 8464/C/2H –
JUNE 2025
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.
No student should be disadvantaged on the basis of their gender identity and/or how they
refer to the gender identity of others in their exam responses.
A consistent use of ‘they/them’ as a singular and pronouns beyond ‘she/her’ or ‘he/him’ will be
credited in
exam responses in line with existing mark scheme criteria.
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
2
, MARK SCHEME – GCSE COMBINED SCIENCE: TRILOGY – 8464/C/2H –
JUNE 2025
materia l that is acknowledged to a third party even for internal use within the centre.
Copyright © 2025 AQA and its licensors. All rights reserved.
3
