Pearson Edexcel International GCSE Chemistry (4CH1)
Develop understanding of chemical principles, substances and reactions through physical, inorganic and organic chemistry.
Specification Issue 3, September 2024
Course structure and assessment routes
- Take both papers. Paper 1 assesses non-bold content; Paper 2 assesses the full specification, including additional C-labelled content.
Main syllabus content
- Principles of chemistry
- Inorganic chemistry
- Physical chemistry
- Organic chemistry
Use Syllabus for the topic checklist. Where the qualification offers options, follow your chosen route rather than treating every option as compulsory.
4CH1 assessment structure
Use the route above to identify which components you take. Marks below are raw marks; the stated weightings determine their contribution to the award.
4CH1/1C
Chemistry Paper 1
- Duration
- 2 hours
- Marks
- 110
- Weighting
- 61.1%
4CH1/2C
Chemistry Paper 2
- Duration
- 1 hour 15 minutes
- Marks
- 70
- Weighting
- 38.9%
Key assessment information
- Both papers are externally assessed; calculators are permitted. Paper 1 is shared with the corresponding 4SD0 science paper. Paper 1/Paper 2 is not a Foundation/Higher choice.
Official sources and verification
Checked 2026-09-04 against the official 4CH1 syllabus/specification (PDF). Specification Issue 3, September 2024.
Source PDF pages: 13, 14. PDF page positions may differ from printed page numbers.
IGCSEfy is an independent study aid. Check the full official document and your exam-paper instructions, especially exam-year options, equipment and centre arrangements. Older archive papers may follow an earlier syllabus.