CHEMISTRY · Pearson Edexcel IGCSE
CHEMISTRY/11
C (Core Theory)
Chemistry · 2024 · Variant 1
Relative difficulty
Analysis source: Pearson Edexcel
Analysis aligned to the official syllabus and assessment design.
3.2 / 5
180
195 min
Separation, analytical techniques, and solubility plotting
Cohort performance
Session statistics from official examination reports
Total marks
180
Duration
195 min
Session difficulty
3.2 / 5
Key examiner messages
Top priorities from the principal examiner before you revise
The Summer 2024 Pearson Edexcel International GCSE Chemistry papers (1C and 2C) represent a fair yet challenging assessment.
Rated at a 3 out of 5 difficulty, the examination beautifully balanced straightforward recall with demanding application.
Paper 1C offered plenty of entry points through core reactivity trends and simple atomic structure, while Paper 2C increased the cognitive load with physical chemistry concepts, solubility plotting, and multi-step bond energy profiles.
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.
Recall & Understanding
Weight: 6100%Basic Skills
Weight: 583%Mathematical & Calculation
Weight: 467%Experimental
Weight: 350%Logical Explanation
Weight: 233%
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
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
Match the expected response style for “Give” questions.
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 “State” questions.
State features in sequence or list observable properties — do not explain causes unless asked.
Match the expected response style for “Deduce” questions.
Time traps
Sections where candidates spent disproportionate time relative to marks
Min per mark: 1.1
Min per mark: 1.1
Min per mark: 1.1
Syllabus traceability
Topics linked to questions and mark weighting in this session
Elements, compounds and mixtures
27 marks this session
Energetics
18 marks this session
Crude oil
15 marks this session
Reactivity series
14 marks this session
Chemical formulae, equations and calculations
14 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
Chemical formulae, equations and calculations
Energetics
Crude oil
Elements, compounds and mixtures
Alcohols
Reactivity series
Rates of reaction
Alkenes
Difficulty trend
How session difficulty has shifted across recent years
Paper comparison
Marks and duration breakdown across papers in this session
Paper 1C:
Paper 2C:
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
Elements, compounds and mixtures
27 marks this session
Practise in RevuiEnergetics
18 marks this session
Practise in RevuiCrude oil
15 marks this session
Practise in RevuiReactivity series
14 marks this session
Practise in RevuiChemical formulae, equations and calculations
14 marks this session
Practise in RevuiSelf-diagnostic checklist
Key actions before you sit this paper — copy and tick off as you revise
- 1Message
The Summer 2024 Pearson Edexcel International GCSE Chemistry papers (1C and 2C) represent a fair yet challenging assessment.
- 2Message
Rated at a 3 out of 5 difficulty, the examination beautifully balanced straightforward recall with demanding application.
- 3Message
Paper 1C offered plenty of entry points through core reactivity trends and simple atomic structure, while Paper 2C increased the cognitive load with physical chemistry concepts, solubility plotting, and multi-step bond energy profiles.
Teacher briefing pack
One-page session summary for tutors and classroom review
2024 2024
Chemistry
The Summer 2024 Pearson Edexcel International GCSE Chemistry papers (1C and 2C) represent a fair yet challenging assessment. Rated at a 3 out of 5 difficulty, the examination beautifully balanced straightforward recall with demanding application. Paper 1C offered plenty of entry
The Summer 2024 Pearson Edexcel International GCSE Chemistry papers (1C and 2C) represent a fair yet challenging assessment.
Rated at a 3 out of 5 difficulty, the examination beautifully balanced straightforward recall with demanding application.
Paper 1C offered plenty of entry points through core reactivity trends and simple atomic structure, while Paper 2C increased the cognitive load with physical chemistry concepts, solubility plotting, and multi-step bond energy profiles.
- Total marks
- 180
- Duration
- 195 min
- Session difficulty
- 3.2 / 5
Session analysis
The Summer 2024 Pearson Edexcel International GCSE Chemistry papers (1C and 2C) represent a fair yet challenging assessment. Rated at a 3 out of 5 difficulty, the examination beautifully balanced straightforward recall with demanding application. Paper 1C offered plenty of entry points through core reactivity trends and simple atomic structure, while Paper 2C increased the cognitive load with physical chemistry concepts, solubility plotting, and multi-step bond energy profiles.
Updated Jun 13, 2026
Paper breakdown
Paper 1C:
Paper 2C:
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.
83% 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.
Short Answer
84·28·47%
Structured/Explanation
58·18·32%
Calculation
30·10·17%
Multiple Choice
8·8·4%
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 1C (First Hal…
0.90 m/minPaper 1C (Second Ha…
0.94 m/minPaper 2C (First Hal…
0.93 m/minTotal marks
133
Total time
145 min
Avg pace
0.92
Next-year prediction
Topics worth watching next year, with the reason shown directly below each bar.
Carboxylic acids
5%5%
Acids, alkalis and titrations (Full calculations)
4%4%
Extraction and uses of metals
4%4%
Difficulty Verdict
The Summer 2024 Pearson Edexcel International GCSE Chemistry papers (1C and 2C) represent a fair yet challenging assessment. Rated at a 3 out of 5 difficulty, the examination beautifully balanced straightforward recall with demanding application. Paper 1C offered plenty of entry points through core reactivity trends and simple atomic structure, while Paper 2C increased the cognitive load with physical chemistry concepts, solubility plotting, and multi-step bond energy profiles.
Exam tips
Paper format
- Duration
- 2h
- Total marks
- 110
- Weighting
- 61.1%
- Question types
- Multiple Choice / Drag-and-Drop Equivalents, Short recall and identification, Graphing & plotting skills, Calculations & quantitative formulas, Longer explanation / structured logic
Analysis is paraphrased for study purposes. Always verify against the official examiner report and mark scheme.