Use pastpapers like this to help you revise
Understand exam format and structure
Past papers show the types of questions, mark allocations, and time limits,
helping students know what to expect in the real exam.
Identify frequently tested topics
By reviewing several past papers, students can spot patterns and common
themes that appear regularly.
Practice time management
Completing past papers under timed conditions helps students learn how
to pace themselves during the exam.
Improve exam technique
Students learn how to interpret command words (e.g. explain, compare,
evaluate) and structure answers effectively.
Assess strengths and weaknesses
Marking answers using mark schemes highlights areas that need more
revision.
Build confidence
Familiarity with exam-style questions reduces anxiety and increases
confidence going into the exam.
Improve accuracy and clarity
Repeated practice helps students write clearer, more precise answers and
avoid common mistakes.
Track progress over time
Comparing results from different past papers shows improvement and
helps students adjust revision strategies.
TYRIONPAPERS.COM
, Mock Papers
Practice Papers
Past Papers
OCR A LEVEL 2025/26
Helpful for mocks and exam
revision
TYRIONPAPERS.COM
, Oxford Cambridge and RSA
AS Level Chemistry B (H033)
A Level Chemistry B (H433)
Data Sheet
* 3 4 2 7 1 7 1 4 2 6 *
INSTRUCTIONS
• Do not send this Data Sheet for marking. Keep it in the centre or recycle it.
INFORMATION
• This document has 4 pages.
General Information Triplet base codes
(codons) for some amino
Molar gas volume = 24.0 dm3 mol–1 at RTP acids used in mRNA
Avogadro constant, NA = 6.02 × 1023 mol–1 Glycine GGU
Specific heat capacity of water, c = 4.18 J g–1 K–1 Alanine GCC
Planck constant, h = 6.63 × 10–34 J Hz–1 Leucine CUG
Speed of light in a vacuum, c = 3.00 × 108 m s–1 Serine UCG
Chemistry B
Ionic product of water, Kw = 1.00 × 10–14 mol2 dm–6 at 298 K Aspartic acid GAU
1 tonne = 106 g Glutamine CAA
Arrhenius equation: k = Ae–Ea/RT or ln k = –Ea/RT + ln A Valine GUC
Gas constant, R = 8.314 J mol–1 K–1
Copyright Information
OCR is committed to seeking permission to reproduce all third-party content that it uses in its assessment materials. OCR has attempted to identify and contact all
copyright holders whose work is used in this paper. To avoid the issue of disclosure of answer-related information to candidates, all copyright acknowledgements are
reproduced in the OCR Copyright Acknowledgements Booklet. This is produced for each series of examinations and is freely available to download from our public website
(www.ocr.org.uk) after the live examination series.
If OCR has unwittingly failed to correctly acknowledge or clear any third-party content in this assessment material, OCR will be happy to correct its mistake at the earliest
possible opportunity.
For queries or further information please contact The OCR Copyright Team, The Triangle Building, Shaftesbury Road, Cambridge CB2 8EA.
OCR is part of Cambridge University Press & Assessment, which is itself a department of the University of Cambridge.
© OCR 2025 Chemistry B (Salters)
DC (ST) 358155 CST264
for more: tyrionpapers.com
Understand exam format and structure
Past papers show the types of questions, mark allocations, and time limits,
helping students know what to expect in the real exam.
Identify frequently tested topics
By reviewing several past papers, students can spot patterns and common
themes that appear regularly.
Practice time management
Completing past papers under timed conditions helps students learn how
to pace themselves during the exam.
Improve exam technique
Students learn how to interpret command words (e.g. explain, compare,
evaluate) and structure answers effectively.
Assess strengths and weaknesses
Marking answers using mark schemes highlights areas that need more
revision.
Build confidence
Familiarity with exam-style questions reduces anxiety and increases
confidence going into the exam.
Improve accuracy and clarity
Repeated practice helps students write clearer, more precise answers and
avoid common mistakes.
Track progress over time
Comparing results from different past papers shows improvement and
helps students adjust revision strategies.
TYRIONPAPERS.COM
, Mock Papers
Practice Papers
Past Papers
OCR A LEVEL 2025/26
Helpful for mocks and exam
revision
TYRIONPAPERS.COM
, Oxford Cambridge and RSA
AS Level Chemistry B (H033)
A Level Chemistry B (H433)
Data Sheet
* 3 4 2 7 1 7 1 4 2 6 *
INSTRUCTIONS
• Do not send this Data Sheet for marking. Keep it in the centre or recycle it.
INFORMATION
• This document has 4 pages.
General Information Triplet base codes
(codons) for some amino
Molar gas volume = 24.0 dm3 mol–1 at RTP acids used in mRNA
Avogadro constant, NA = 6.02 × 1023 mol–1 Glycine GGU
Specific heat capacity of water, c = 4.18 J g–1 K–1 Alanine GCC
Planck constant, h = 6.63 × 10–34 J Hz–1 Leucine CUG
Speed of light in a vacuum, c = 3.00 × 108 m s–1 Serine UCG
Chemistry B
Ionic product of water, Kw = 1.00 × 10–14 mol2 dm–6 at 298 K Aspartic acid GAU
1 tonne = 106 g Glutamine CAA
Arrhenius equation: k = Ae–Ea/RT or ln k = –Ea/RT + ln A Valine GUC
Gas constant, R = 8.314 J mol–1 K–1
Copyright Information
OCR is committed to seeking permission to reproduce all third-party content that it uses in its assessment materials. OCR has attempted to identify and contact all
copyright holders whose work is used in this paper. To avoid the issue of disclosure of answer-related information to candidates, all copyright acknowledgements are
reproduced in the OCR Copyright Acknowledgements Booklet. This is produced for each series of examinations and is freely available to download from our public website
(www.ocr.org.uk) after the live examination series.
If OCR has unwittingly failed to correctly acknowledge or clear any third-party content in this assessment material, OCR will be happy to correct its mistake at the earliest
possible opportunity.
For queries or further information please contact The OCR Copyright Team, The Triangle Building, Shaftesbury Road, Cambridge CB2 8EA.
OCR is part of Cambridge University Press & Assessment, which is itself a department of the University of Cambridge.
© OCR 2025 Chemistry B (Salters)
DC (ST) 358155 CST264
for more: tyrionpapers.com
