CHEMISTRY-A-H432 · Cambridge OCR A Level
CHEMISTRY-A-H432/31
Synoptic & Practical Chemistry
Chemistry A - H432 · 2022 · Variant 1
Relative difficulty
Analysis source: OCR
Analysis aligned to the official syllabus and assessment design.
4.2 / 5
270
360 min
Spectroscopy and Organic Synthesis
Cohort performance
Session statistics from official examination reports
Total marks
270
Duration
360 min
Session difficulty
4.2 / 5
Key examiner messages
Top priorities from the principal examiner before you revise
The June 2022 A-Level Chemistry A (H432) series represents a highly challenging exam suite, leaning significantly toward application, synthesis design, and rigorous mathematical execution.
Across Papers 1, 2, and 3, examiners tested both deep conceptual understanding and precise practical techniques, which resulted in a higher than average conceptual load.
Key physical chemistry calculations required meticulous attention to multi-step conversions, while the organic chemistry papers demanded high-level mechanistic details and structural deductions from complex spectral combinations.
Question difficulty map
How candidates performed on each question in this series
No data available in official reports
Assessment objectives
Skill and AO weighting from official examiner commentary
Skill weighting
Shows the skill mix this paper tested most heavily.
Mathematical & Calculation
Weight: 7100%Organic
Weight: 686%Mechanism
Weight: 571%Conceptual Explanation
Weight: 457%Practical & Experimental
Weight: 229%
Method marks watchlist
Where working, steps, or method marks were commonly lost
No data available in official reports
Recurring mistakes across years
Themes examiners flag in multiple recent sessions for this subject
No data available in official reports
Question choice intelligence
Mean scores and popularity for optional questions (HKDSE electives)
No data available in official reports
Level exemplars
What candidate scripts at each grade level looked like
No data available in official reports
Grade & admission context
How marks relate to grade thresholds and entry standards
Report type
Examiner report — national grade boundaries and question-level commentary
Level A*
Approx. 79% of maximum mark
Level A
Approx. 62% of maximum mark
Level B
Approx. 49% of maximum mark
Level C
Approx. 36% of maximum mark
Level D
Approx. 23% of maximum mark
Level E
Approx. 10% of maximum mark
Deep insights
What top candidates did
Techniques and approaches examiners rewarded in this series
No data available in official reports
Command word playbook
How to match each command word to the expected response style
Give reasons and link mechanism to outcome; each point needs a because/so chain.
Show formula, substitution, and unit; method marks need visible working.
Match the expected response style for “Draw” questions.
Match the expected response style for “Construct” questions.
Apply knowledge to an unfamiliar context; concise, practical points score best.
Time traps
Sections where candidates spent disproportionate time relative to marks
Min per mark: 1.4
Min per mark: 1.4
Min per mark: 1.3
Min per mark: 1.3
Min per mark: 1.3
Syllabus traceability
Topics linked to questions and mark weighting in this session
Spectroscopy
18 marks this session
Transition elements
17 marks this session
Acids, bases and buffers
17 marks this session
Amount of substance
16 marks this session
Organic synthesis (Nitrogen compounds, polymers and synthesis)
16 marks this session
MCQ trap analytics
Commonly chosen wrong options from examiner commentary
No data available in official reports
Topic heatmap across years
Mark concentration by topic and exam year for this subject
Mark intensity
Acids, bases and buffers
Organic synthesis
Amount of substance
Transition elements
Spectroscopy
Organic synthesis (Nitrogen compounds, polymers and synthesis)
Difficulty trend
How session difficulty has shifted across recent years
Paper comparison
Marks and duration breakdown across papers in this session
H432/01 Periodic table, elements and physical chemistry: H432/02 Synthesis and analytical techniques: H432/03 Unified chemistry:
Marks you can still earn
Where valid approaches outside the mark scheme may still gain credit
No data available in official reports
Practise what examiners flagged
Target weak topics from this report inside the Revui app
Spectroscopy
18 marks this session
Practise in RevuiTransition elements
17 marks this session
Practise in RevuiAcids, bases and buffers
17 marks this session
Practise in RevuiAmount of substance
16 marks this session
Practise in RevuiOrganic synthesis (Nitrogen compounds, polymers and synthesis)
16 marks this session
Practise in RevuiSelf-diagnostic checklist
Key actions before you sit this paper — copy and tick off as you revise
- 1Message
The June 2022 A-Level Chemistry A (H432) series represents a highly challenging exam suite, leaning significantly toward application, synthesis design, and rigorous mathematical execution.
- 2Message
Across Papers 1, 2, and 3, examiners tested both deep conceptual understanding and precise practical techniques, which resulted in a higher than average conceptual load.
- 3Message
Key physical chemistry calculations required meticulous attention to multi-step conversions, while the organic chemistry papers demanded high-level mechanistic details and structural deductions from complex spectral combinations.
Teacher briefing pack
One-page session summary for tutors and classroom review
2022 2022
Chemistry A - H432
The June 2022 A-Level Chemistry A (H432) series represents a highly challenging exam suite, leaning significantly toward application, synthesis design, and rigorous mathematical execution. Across Papers 1, 2, and 3, examiners tested both deep conceptual understanding and precise
The June 2022 A-Level Chemistry A (H432) series represents a highly challenging exam suite, leaning significantly toward application, synthesis design, and rigorous mathematical execution.
Across Papers 1, 2, and 3, examiners tested both deep conceptual understanding and precise practical techniques, which resulted in a higher than average conceptual load.
Key physical chemistry calculations required meticulous attention to multi-step conversions, while the organic chemistry papers demanded high-level mechanistic details and structural deductions from complex spectral combinations.
- Total marks
- 270
- Duration
- 360 min
- Session difficulty
- 4.2 / 5
Session analysis
The June 2022 A-Level Chemistry A (H432) series represents a highly challenging exam suite, leaning significantly toward application, synthesis design, and rigorous mathematical execution. Across Papers 1, 2, and 3, examiners tested both deep conceptual understanding and precise practical techniques, which resulted in a higher than average conceptual load. Key physical chemistry calculations required meticulous attention to multi-step conversions, while the organic chemistry papers demanded high-level mechanistic details and structural deductions from complex spectral combinations.
Updated Jun 14, 2026
Paper breakdown
H432/01 Periodic table, elements and physical chemistry: H432/02 Synthesis and analytical techniques: H432/03 Unified chemistry:
Top chapters
Exam structure insights
Marks by chapter
See where the marks were concentrated so revision time goes to the highest-value topics.
Mark accessibility
Estimate which marks were basic, mid-level, or high-difficulty.
69% within easy or medium reach
Command word frequency
Spot common command words so answers match the expected response style.
Question type mix
Compare the mark share of each paper section and question type.
shortAnswer
146·68·54%
structuredCalculations
58·14·21%
levelOfResponse
36·6·13%
multipleChoice
30·30·11%
Study ROI
Bigger bubbles recur more often; higher bubbles carry more marks, helping you rank revision priorities.
Time vs marks
Compare marks with suggested time allocation to plan exam pacing.
Paper 1 Section A (
0.75 m/minPaper 1 Section B (
0.74 m/minPaper 2 Section A (
0.75 m/minPaper 2 Section B (
0.74 m/minPaper 3 (Unified Ch
0.78 m/minTotal marks
270
Total time
360 min
Avg pace
0.75
Cumulative marks ladder
The line is your running mark total question by question; dashed lines are the estimated grade cut-offs. See which question the line crosses your target grade at, so you know how far you must answer cleanly and which questions decide a band.
Next-year prediction
Topics worth watching next year, with the reason shown directly below each bar.
Chromatography (TLC, Rf & Gas Chromatography)
90%90%
Rate concentration graphs and Arrhenius equation plot
88%88%
Born-Haber Cycles & Lattice Enthalpy comparisons
85%85%
June 2022 H432 Exam Analysis & Examiner Verdict
The June 2022 A-Level Chemistry A (H432) series represents a highly challenging exam suite, leaning significantly toward application, synthesis design, and rigorous mathematical execution. Across Papers 1, 2, and 3, examiners tested both deep conceptual understanding and precise practical techniques, which resulted in a higher than average conceptual load. Key physical chemistry calculations required meticulous attention to multi-step conversions, while the organic chemistry papers demanded high-level mechanistic details and structural deductions from complex spectral combinations.
Exam tips
Paper format
- Duration
- 1h 30min
- Total marks
- 70
- Weighting
- 26%
- Question types
- shortAnswer, extendedResponse
Analysis is paraphrased for study purposes. Always verify against the official examiner report and mark scheme.