CSCA exam analysis · Topic distribution

CSCA Topic Breakdown: Chapter Percentages by Subject

See Math, Physics and Chemistry chapter percentages and question counts, based on PrepPals’ analysis of recalled March 2026 CSCA questions.

9 min read
Three paper study maps representing mathematics, physics and chemistry topics.

Which chapters take the largest share?

From PrepPals’ analysis of recalled March 2026 CSCA questions, the largest chapter group in each subject is:[4][5][6]

Mathematics

23.4%

Trigonometry

Physics

26.7%

Kinematics

Chemistry

23.4%

Classification & stoichiometry

48questions per STEM paper
60minutes per STEM paper

Other sittings we have analysed show a similar balance, with a few questions’ difference per chapter.

Check your CSCA subject requirements first; use the syllabus guide for complete topic scope and original documents.

Mathematics, Physics and Chemistry at a glance

These charts come from the PrepPals Academic Team’s analysis of recalled March 2026 CSCA questions. Compare chapter shares and the corresponding 48-question allocation for each subject.

Mathematics[4]

Trigonometry leads; sets/algebra and coordinate geometry share second place.

Chapter distributionQuestions / 48
Mathematics — Chapter distributionTrigonometry: 23.4% · 12 questionsSets, inequalities & basic algebra: 14.9% · 7 questionsCoordinate geometry: 14.9% · 7 questionsFunctions & properties: 12.8% · 6 questionsSequences & recurrence relations: 12.8% · 6 questionsConic sections: 12.8% · 6 questionsVectors & complex numbers: 6.4% · 3 questionsProbability: 2.1% · 1 question
  1. Trigonometry23.4%12 questions
  2. Sets, inequalities & basic algebra14.9%7 questions
  3. Coordinate geometry14.9%7 questions
  4. Functions & properties12.8%6 questions
  5. Sequences & recurrence relations12.8%6 questions
  6. Conic sections12.8%6 questions
  7. Vectors & complex numbers6.4%3 questions
  8. Probability2.1%1 question
Total48 questions

Physics[5]

Kinematics leads; forces, energy/momentum and circuits each account for 15.6%.

Chapter distributionQuestions / 48
Physics — Chapter distributionKinematics: 26.7% · 13 questionsNewton’s laws & forces: 15.6% · 8 questionsWork, energy & momentum: 15.6% · 8 questionsElectric fields & circuits: 15.6% · 7 questionsMagnetism & electromagnetic induction: 13.3% · 6 questionsWaves, optics & thermal physics: 13.3% · 6 questions
  1. Kinematics26.7%13 questions
  2. Newton’s laws & forces15.6%8 questions
  3. Work, energy & momentum15.6%8 questions
  4. Electric fields & circuits15.6%7 questions
  5. Magnetism & electromagnetic induction13.3%6 questions
  6. Waves, optics & thermal physics13.3%6 questions
Total48 questions

Chemistry[6]

Classification/stoichiometry leads, followed by atomic structure and bonding.

Chapter distributionQuestions / 48
Chemistry — Chapter distributionClassification & stoichiometry: 23.4% · 12 questionsAtomic structure & bonding: 19.1% · 9 questionsAcids, bases, salts & solutions: 14.9% · 7 questionsInorganic & qualitative analysis: 12.8% · 6 questionsOrganic chemistry: 12.8% · 6 questionsKinetics & equilibrium: 10.6% · 5 questionsRedox & electrochemistry: 6.4% · 3 questions
  1. Classification & stoichiometry23.4%12 questions
  2. Atomic structure & bonding19.1%9 questions
  3. Acids, bases, salts & solutions14.9%7 questions
  4. Inorganic & qualitative analysis12.8%6 questions
  5. Organic chemistry12.8%6 questions
  6. Kinetics & equilibrium10.6%5 questions
  7. Redox & electrochemistry6.4%3 questions
Total48 questions

Use topic share and your own errors together

Use the chapter shares with your latest answers: prioritise a larger topic where your method is still unreliable.

A magnifying lens isolates a gap in a practice card while already completed work is set aside.

Choose your next move

Chapter share ↓ / Your answers →
Needs workReliable
Larger shareStart hereOne weak step → example → fresh questionMaintainShort mixed set
Smaller shareRepair the basicsAlgebra · signs · unitsRevisit laterInclude in your next mixed set

From a five-question check to one focused block

Example: choose the next practice block from these two results.

Five-question check
Trigonometry5/5 correctMaintain
Functions3/5 correct2 missed domain restrictions

Next 20 minutes: domain restrictions

  1. 5 minName the error
  2. 10 minRepair and transfer
  3. 5 minSet tomorrow’s check
  1. 5 min

    Name the error

    √(x − 2)/(x − 5)

    • x ≥ 2
    • x ≠ 5

    Which condition did you miss?

  2. 10 min

    Repair and transfer

    √(x + 1)/(x − 3)

    • x ≥ −1
    • x ≠ 3

    Domain: [−1, 3) ∪ (3, ∞)

  3. 5 min

    Set tomorrow’s check

    New question · next day

    • All restrictions
    • No hints

    Record the rule and pick your next question.

After the example, solve a fresh question without the answer beside you. Return to the skill in a later session.[7][8]

Take one selected topic into practice.

Use a matching subject exercise, record the failed step, then retry a fresh question.

Questions students ask about CSCA topic weighting

Which topics carry the most weight in CSCA Mathematics?

Trigonometry has the largest share in PrepPals’ March 2026 analysis: 23.4%.

  • Sets, inequalities and basic algebra account for 14.9%; coordinate geometry also accounts for 14.9%.
  • Use the Mathematics pie chart for all eight chapter groups and their question allocations.
Which topics carry the most weight in CSCA Physics?

Kinematics leads at 26.7% in the March 2026 analysis.

  • Newton’s laws and forces, work/energy/momentum, and electric fields/circuits each account for 15.6%.
  • The full Physics syllabus still includes topics such as modern physics that are not shown as a separate slice.
Which topics carry the most weight in CSCA Chemistry?

Classification and stoichiometry lead at 23.4% in the March 2026 analysis.

  • Atomic structure, bonding and periodic trends follow at 19.1%; acids, bases, salts and solutions account for 14.9%.
  • Use the Chemistry pie chart to compare all seven chapter groups.
Where do these CSCA chapter percentages come from?

They come from the PrepPals Academic Team’s own analysis of recalled March 2026 CSCA questions.

  • The team grouped recalled questions by chapter for Mathematics, Physics and Chemistry.
  • These are first-party exam observations; the official syllabuses define the examinable scope.
How many questions are allocated to each CSCA chapter?

The chapter counts beside each subject’s pie chart add up to 48 questions.

  • They are whole-number allocations converted from our March 2026 chapter percentages, with the method recorded in Sources.
  • They show the balance of a 48-question paper; another sitting may differ by a few questions per chapter.
Does the CSCA topic distribution change between exam dates?

The overall chapter balance has been similar across the sittings PrepPals has analysed.

  • This page uses March 2026 as the example; individual chapters may have a few more or fewer questions in another sitting.
  • Use the broad pattern to plan practice while maintaining full syllabus coverage.
Can I skip CSCA chapters with a small share?

No. A smaller share does not remove a topic from the exam scope.

  • Prioritise recurring errors in larger chapters, but keep smaller chapters in mixed practice.
  • For a short review window, the final two-day subject checklists help you choose manageable tasks.
How should I use the CSCA topic breakdown to plan revision?

Combine chapter share with your own recent performance.

  • Start with a familiar, larger-share topic where errors keep returning; repair one failed step and retry it without notes.
  • Use the 21-day study plan to spread practice and later checks across the time you have.

Sources & editorial notes

Exam information
  • The chapter percentages come from the PrepPals Academic Team’s own analysis of recalled March 2026 CSCA questions; 03.2026 refers to the exam month.
  • Across other sittings we have analysed, the overall chapter balance has been similar, with differences of a few questions per chapter.
  • The official syllabuses are used to check the 48-question, 60-minute STEM format and examinable scope.
Learning research
Learning research informs the worked examples, independent practice and later review used in the practice section.
PrepPals guidance
  • The charts retain the team’s chapter groups and percentages. Rounding gives totals of 100.1% for Mathematics and Physics, and 100.0% for Chemistry.
  • Displayed question counts convert the shares to 48 questions per subject: normalize, take whole-number quotas and allocate the remainder by fractional size, breaking ties in original topic order.
  • The examples and revision suggestions are written by the PrepPals Academic Team.

Exam information

  1. CSCA Mathematics Examination Syllabus (2025 edition) ↗

    Four content modules and the 48-question, 60-minute format. Hosted by Zhejiang Sci-Tech University; no fixed chapter quota is given.

  2. CSCA Physics Examination Syllabus (2025 edition) ↗

    Chinese PDF: five content modules, including optics and modern physics. The practice prompts are our own examples.

  3. CSCA Chemistry Examination Syllabus (2025 edition) ↗

    Chinese PDF: four content modules, including basic organic chemistry and experiments. Scope is distinct from frequency.

  4. PrepPals: March 2026 CSCA Mathematics recalled-question analysis ↗

    The team’s original chapter analysis of recalled Mathematics questions from March 2026, providing the percentages used in this page’s Mathematics chart.

  5. PrepPals: March 2026 CSCA Physics recalled-question analysis ↗

    The team’s original chapter analysis of recalled Physics questions from March 2026, providing the percentages used in this page’s Physics chart.

  6. PrepPals: March 2026 CSCA Chemistry recalled-question analysis ↗

    The team’s original chapter analysis of recalled Chemistry questions from March 2026, providing the percentages used in this page’s Chemistry chart.

Learning research

  1. IES / WWC: Organizing Instruction and Study (2007) ↗

    Recommends alternating worked solutions with independent problem solving, using quizzing and spacing study. Evidence ratings vary by recommendation.

  2. Dunlosky et al.: Effective Learning Techniques (2013) ↗

    Rates practice testing and distributed practice highly across the evidence reviewed; it is not a CSCA-specific intervention trial.

How this guide was built

Last updated
Sources checked