Pearson Edexcel International Advanced Level Chemistry (YCH11)
Develop chemical knowledge across structure, reactions and synthesis alongside practical and quantitative skills.
Specification Issue 1, September 2017
Course structure and assessment routes
- IAS Chemistry XCH11: Units 1–3. IAL Chemistry YCH11: all six units, assessed in stages or together.
Main syllabus content
- Structure, bonding and introductory organic chemistry
- Energetics, group chemistry, halogenoalkanes and alcohols
- Rates, equilibria and further organic chemistry
- Transition metals and organic nitrogen chemistry
- Practical skills I and II
Use Syllabus for the topic checklist. Where the qualification offers options, follow your chosen route rather than treating every option as compulsory.
YCH11 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.
WCH11/01
Unit 1: Structure, Bonding and Introduction to Organic Chemistry
- Duration
- 1 hour 30 minutes
- Marks
- 80
- Weighting
- 40% IAS / 20% IAL
WCH12/01
Unit 2: Energetics, Group Chemistry, Halogenoalkanes and Alcohols
- Duration
- 1 hour 30 minutes
- Marks
- 80
- Weighting
- 40% IAS / 20% IAL
WCH13/01
Unit 3: Practical Skills in Chemistry I
- Duration
- 1 hour 20 minutes
- Marks
- 50
- Weighting
- 20% IAS / 10% IAL
WCH14/01
Unit 4: Rates, Equilibria and Further Organic Chemistry
- Duration
- 1 hour 45 minutes
- Marks
- 90
- Weighting
- 20% IAL
WCH15/01
Unit 5: Transition Metals and Organic Nitrogen Chemistry
- Duration
- 1 hour 45 minutes
- Marks
- 90
- Weighting
- 20% IAL
WCH16/01
Unit 6: Practical Skills in Chemistry II
- Duration
- 1 hour 20 minutes
- Marks
- 50
- Weighting
- 10% IAL
Key assessment information
- All six are externally assessed written exams, including the practical-skills units. Calculators are permitted; Units 2, 4 and 5 use the Data Booklet. At least 20% of qualification marks assess mathematics at Level 2 or above.
Official sources and verification
Checked 2026-09-04 against the official YCH11 syllabus/specification (PDF). Specification Issue 1, September 2017.
Source PDF pages: 9, 10, 11, 12, 13, 14, 15. 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.