7405 · AQA A Level
7405/21
Paper 2
Chemistry · June 2024 · Variant 1
Relative difficulty
Analysis source: AQA
Analysis aligned to the official syllabus and assessment design.
4.0 / 5
300
360 min
Organic synthesis
Cohort performance
Session statistics from official examination reports
Total marks
300
Duration
360 min
Session difficulty
4.0 / 5
Key examiner messages
Top priorities from the principal examiner before you revise
In this series, the heavy hitters were Organic Synthesis (accounting for 45 marks), Acids and Bases (21 marks), and Rate Equations (21 marks).
Together, these three topics constituted nearly one-third of the total 300 marks.
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: 7100%Mechanism & Structure
Weight: 686%Logical Explanation
Weight: 457%Practical/ Experiments
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. 80% of maximum mark
Level A
Approx. 66% of maximum mark
Level B
Approx. 54% of maximum mark
Level C
Approx. 42% of maximum mark
Level D
Approx. 30% of maximum mark
Level E
Approx. 18% 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 “Deduce” questions.
Match the expected response style for “State” questions.
Match the expected response style for “Draw” questions.
Apply knowledge to an unfamiliar context; concise, practical points score best.
Match the expected response style for “Give” questions.
Time traps
Sections where candidates spent disproportionate time relative to marks
Min per mark: 1.7
Min per mark: 1.2
Syllabus traceability
Topics linked to questions and mark weighting in this session
Organic synthesis
45 marks this session
Acids and bases
21 marks this session
Rate equations
21 marks this session
Transition metals
19 marks this session
Group 2, the alkaline earth metals
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
Organic synthesis
Acids and bases
Rate equations
Transition metals
Organic analysis
Reactions of ions in aqueous solution
Group 2, the alkaline earth metals
Paper comparison
Marks and duration breakdown across papers in this session
Paper 1 (Inorganic and Physical Chemistry):
Paper 2 (Organic and Physical Chemistry):
Paper 3 (Synoptic):
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
Organic synthesis
45 marks this session
Practise in RevuiAcids and bases
21 marks this session
Practise in RevuiRate equations
21 marks this session
Practise in RevuiTransition metals
19 marks this session
Practise in RevuiGroup 2, the alkaline earth metals
15 marks this session
Practise in RevuiSelf-diagnostic checklist
Key actions before you sit this paper — copy and tick off as you revise
- 1Message
In this series, the heavy hitters were Organic Synthesis (accounting for 45 marks), Acids and Bases (21 marks), and Rate Equations (21 marks).
- 2Message
Together, these three topics constituted nearly one-third of the total 300 marks.
Teacher briefing pack
One-page session summary for tutors and classroom review
June 2024 2024
Chemistry
In this series, the heavy hitters were Organic Synthesis (accounting for 45 marks), Acids and Bases (21 marks), and Rate Equations (21 marks). Together, these three topics constituted nearly one-third of the total 300 marks.
In this series, the heavy hitters were Organic Synthesis (accounting for 45 marks), Acids and Bases (21 marks), and Rate Equations (21 marks).
Together, these three topics constituted nearly one-third of the total 300 marks.
- Total marks
- 300
- Duration
- 360 min
- Session difficulty
- 4.0 / 5
Session analysis
In this series, the heavy hitters were Organic Synthesis (accounting for 45 marks), Acids and Bases (21 marks), and Rate Equations (21 marks). Together, these three topics constituted nearly one-third of the total 300 marks.
Updated Jun 14, 2026
Paper breakdown
Paper 1 (Inorganic and Physical Chemistry):
Paper 2 (Organic and Physical Chemistry):
Paper 3 (Synoptic):
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.
75% 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 Explanation & Theory
115·32·38%
Chemical Equations & Mechanism Drawing
93·23·31%
Structured Calculation
62·15·21%
Multiple Choice
30·30·10%
Study ROI
Bigger bubbles recur more often; higher bubbles carry more marks, helping you rank revision priorities.
Difficulty trend
Compare difficulty across recent years.
Time vs marks
Compare marks with suggested time allocation to plan exam pacing.
Paper 3 Section A (
0.86 m/minPaper 3 Section B (
0.60 m/minTotal marks
90
Total time
120 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.
Amino acids, proteins and DNA
90%90%
Polymers
85%85%
Group 7(17), the halogens
80%80%
Analysis is paraphrased for study purposes. Always verify against the official examiner report and mark scheme.