0620 · Cambridge IGCSE
0620/43
Theory (Extended)
Chemistry · June 2024 · Variant 3
Relative difficulty
Analysis source: Cambridge Assessment International Education
Analysis aligned to the official syllabus and assessment design.
3.8 / 5
160
180 min
—
Cohort performance
Session statistics from official examination reports
Total marks
160
Duration
180 min
Session difficulty
3.8 / 5
Key examiner messages
Top priorities from the principal examiner before you revise
A balanced but rigorous Paper 4 (Extended) that tests key areas including stoichiometry calculation of hydrated zinc sulfate, transition metal properties, the Contact process equilibrium shifts, and organic polymer/cracking chemistry.
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
No data available in official reports
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
Cambridge Principal Examiner Report — component performance and international standards
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
No data available in official reports
Time traps
Sections where candidates spent disproportionate time relative to marks
No data available in official reports
Syllabus traceability
Topics linked to questions and mark weighting in this session
No data available in official reports
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
Reversible reactions and equilibrium
Electrolysis
Atomic structure and the Periodic Table
Rate of reaction
Preparation of salts
Group VII properties
Difficulty trend
How session difficulty has shifted across recent years
Paper comparison
Marks and duration breakdown across papers in this session
Paper 2 Multiple Choice (Extended):
Paper 4 Theory (Extended):
Paper 6 Alternative to Practical:
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
Self-diagnostic checklist
Key actions before you sit this paper — copy and tick off as you revise
- 1Message
A balanced but rigorous Paper 4 (Extended) that tests key areas including stoichiometry calculation of hydrated zinc sulfate, transition metal properties, the Contact process equilibrium shifts, and organic polymer/cracking chemistry.
Teacher briefing pack
One-page session summary for tutors and classroom review
June 2024 2024
Chemistry
A balanced but rigorous Paper 4 (Extended) that tests key areas including stoichiometry calculation of hydrated zinc sulfate, transition metal properties, the Contact process equilibrium shifts, and organic polymer/cracking chemistry.
A balanced but rigorous Paper 4 (Extended) that tests key areas including stoichiometry calculation of hydrated zinc sulfate, transition metal properties, the Contact process equilibrium shifts, and organic polymer/cracking chemistry.
- Total marks
- 160
- Duration
- 180 min
- Session difficulty
- 3.8 / 5
Session analysis
A balanced but rigorous Paper 4 (Extended) that tests key areas including stoichiometry calculation of hydrated zinc sulfate, transition metal properties, the Contact process equilibrium shifts, and organic polymer/cracking chemistry.
Updated Jun 13, 2026
Paper breakdown
Paper 2 Multiple Choice (Extended):
Paper 4 Theory (Extended):
Paper 6 Alternative to Practical:
Exam tips
Paper format
- Duration
- 1h 15min
- Total marks
- 80
Analysis is paraphrased for study purposes. Always verify against the official examiner report and mark scheme.