7404 · AQA AS Level
7404/11
Inorganic and Physical Chemistry
Chemistry · June 2022 · Variant 1
Relative difficulty
Analysis source: AQA
Analysis aligned to the official syllabus and assessment design.
3.5 / 5
160
180 min
Amount of substance
Cohort performance
Session statistics from official examination reports
Total marks
160
Duration
180 min
Session difficulty
3.5 / 5
Key examiner messages
Top priorities from the principal examiner before you revise
High-scoring candidates secured vital marks in the multi-step calculation sections—such as the ideal gas equation calculation on TNT and standard KcK_cKc stoichiometry grids.
However, many candidates struggled on the more analytical physical chemistry tasks, particularly the 5-mark Time of Flight (TOF) mass calculation, where failing to convert molar mass to kilograms per single molecule was a major differentiator.
In organic chemistry, the electrophilic addition and nucleophilic substitution mechanisms continue to be high-yielding areas for students who meticulously draw double-headed curly arrows and intermediate formal charges.
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 /
Weight: 6100%Mechanisms &
Weight: 583%Practical Application
Weight: 467%Recall & Understanding
Weight: 233%Trend
Weight: 117%
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. 69% of maximum mark
Level B
Approx. 58% of maximum mark
Level C
Approx. 46% of maximum mark
Level D
Approx. 35% of maximum mark
Level E
Approx. 24% 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
Show formula, substitution, and unit; method marks need visible working.
Give reasons and link mechanism to outcome; each point needs a because/so chain.
Match the expected response style for “Give” questions.
Match the expected response style for “Deduce” questions.
Name or point to the specific feature asked for — avoid extra explanation.
State features in sequence or list observable properties — do not explain causes unless asked.
Time traps
Sections where candidates spent disproportionate time relative to marks
Min per mark: 1.7
Min per mark: 1.7
Min per mark: 1
Syllabus traceability
Topics linked to questions and mark weighting in this session
Amount of substance
26 marks this session
Chemical equilibria, Le Chatelier’s principle and Kc
16 marks this session
Bonding
15 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
Amount of substance
Bonding
Halogenoalkanes
Chemical equilibria, Le Chatelier’s principle and Kc
Atomic structure
Difficulty trend
How session difficulty has shifted across recent years
Paper comparison
Marks and duration breakdown across papers in this session
Paper 1 Inorganic and Physical Chemistry:
Paper 2 Organic and Physical 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
Amount of substance
26 marks this session
Practise in RevuiChemical equilibria, Le Chatelier’s principle and Kc
16 marks this session
Practise in RevuiBonding
15 marks this session
Practise in RevuiSelf-diagnostic checklist
Key actions before you sit this paper — copy and tick off as you revise
- 1Message
High-scoring candidates secured vital marks in the multi-step calculation sections—such as the ideal gas equation calculation on TNT and standard KcK_cKc stoichiometry grids.
- 2Message
However, many candidates struggled on the more analytical physical chemistry tasks, particularly the 5-mark Time of Flight (TOF) mass calculation, where failing to convert molar mass to kilograms per single molecule was a major differentiator.
- 3Message
In organic chemistry, the electrophilic addition and nucleophilic substitution mechanisms continue to be high-yielding areas for students who meticulously draw double-headed curly arrows and intermediate formal charges.
Teacher briefing pack
One-page session summary for tutors and classroom review
June 2022 2022
Chemistry
High-scoring candidates secured vital marks in the multi-step calculation sections—such as the ideal gas equation calculation on TNT and standard KcK_cKc stoichiometry grids. However, many candidates struggled on the more analytical physical chemistry tasks, particularly the 5-m
High-scoring candidates secured vital marks in the multi-step calculation sections—such as the ideal gas equation calculation on TNT and standard KcK_cKc stoichiometry grids.
However, many candidates struggled on the more analytical physical chemistry tasks, particularly the 5-mark Time of Flight (TOF) mass calculation, where failing to convert molar mass to kilograms per single molecule was a major differentiator.
In organic chemistry, the electrophilic addition and nucleophilic substitution mechanisms continue to be high-yielding areas for students who meticulously draw double-headed curly arrows and intermediate formal charges.
- Total marks
- 160
- Duration
- 180 min
- Session difficulty
- 3.5 / 5
Session analysis
High-scoring candidates secured vital marks in the multi-step calculation sections—such as the ideal gas equation calculation on TNT and standard KcK_cKc stoichiometry grids. However, many candidates struggled on the more analytical physical chemistry tasks, particularly the 5-mark Time of Flight (TOF) mass calculation, where failing to convert molar mass to kilograms per single molecule was a major differentiator. In organic chemistry, the electrophilic addition and nucleophilic substitution mechanisms continue to be high-yielding areas for students who meticulously draw double-headed curly arrows and intermediate formal charges.
Updated Jun 14, 2026
Paper breakdown
Paper 1 Inorganic and Physical Chemistry:
Paper 2 Organic and Physical 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.
78% 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.
Structured
130·15·81%
Multiple Choice
30·30·19%
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 (…
0.60 m/minPaper 1 Section B (…
1.00 m/minPaper 2 Section A (…
0.60 m/minTotal marks
95
Total time
115 min
Avg pace
0.83
Next-year prediction
Topics worth watching next year, with the reason shown directly below each bar.
Periodicity trends (melting/boiling points and ionisation energy across Period 3)
5%5%
Halogenoalkanes substitution mechanisms with alternative nucleophiles (hydroxide, cyanide)
4%4%
Exam tips
Paper format
- Duration
- 1h 30min
- Total marks
- 80
- Weighting
- 50%
- Question types
- Structured Written Questions, Multiple Choice Questions
Analysis is paraphrased for study purposes. Always verify against the official examiner report and mark scheme.