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Assessment
How Cambridge IGCSE Chemistry is assessed
Core students take Papers 1 and 3 and can get grades C–G. Extended students learn the Core and Supplement content, take Papers 2 and 4, and can get grades A*–G. Everyone also takes Paper 5 or Paper 6.
Syllabus 0620, for exams in 2026–2028.
Core (grades C–G)
Paper 1: Multiple Choice (Core)
40 four-option multiple-choice questions
- Time
- 45 min
- Marks
- 40
- Weight
- 30%
Paper 3: Theory (Core)
Short-answer and structured questions
- Time
- 1 h 15 min
- Marks
- 80
- Weight
- 50%
Extended (grades A*–G)
Paper 2: Multiple Choice (Extended)
40 four-option multiple-choice questions
- Time
- 45 min
- Marks
- 40
- Weight
- 30%
Paper 4: Theory (Extended)
Short-answer and structured questions
- Time
- 1 h 15 min
- Marks
- 80
- Weight
- 50%
Everyone takes one practical paper
Paper 5: Practical Test
Practical test of experimental skills
- Time
- 1 h 15 min
- Marks
- 40
- Weight
- 20%
Paper 6: Alternative to Practical
Written paper on experimental skills
- Time
- 1 h
- Marks
- 40
- Weight
- 20%
Your school chooses Paper 5 (a practical test) or Paper 6 (a written alternative to practical). Either is worth 20%. There is no coursework.
From the official Cambridge International syllabus, checked October 2026. Read the syllabus
Syllabus content
What’s on the Cambridge IGCSE Chemistry syllabus
- States of matter
- Atoms, elements and compounds
- Stoichiometry
- Electrochemistry
- Chemical energetics
- Chemical reactions
- Acids, bases and salts
- The Periodic Table
- Metals
- Chemistry of the environment
- Organic chemistry
- Experimental techniques and chemical analysis
Where marks are lost
Common Cambridge IGCSE Chemistry mistakes
Naming a test without its result.
Give both: damp red litmus turns blue for ammonia; a lighted splint gives a squeaky pop for hydrogen; limewater turns milky for carbon dioxide.
Leaving out state symbols.
Add state symbols whenever the question asks for them. In an ionic equation, show only the ions that change.
Drawing energy diagrams the wrong way round.
In an exothermic reaction the products are lower than the reactants and ΔH is negative. Endothermic is the reverse.
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Cambridge IGCSE Chemistry questions, answered.
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