Chemistry 0620/43 mark scheme, October/November 2025
Cambridge IGCSE Chemistry (0620), Paper 4 Theory (Extended), October/November 2025. The mark scheme is 0620_w25_ms_43 and the question paper 0620_w25_qp_43.
- Paper
- Paper 4 Theory (Extended)
- Total marks
- 80
- Time
- 1 hour 15 minutes
- Questions
- 6
- Code on the paper
- 0620/43/O/N/25
Marks for each question
- Q19 marks
- Q28 marks
- Q317 marks
- Q417 marks
- Q512 marks
- Q617 marks
How this paper is marked
Examiners follow the generic marking principles at the front of the scheme, then each question's points: method (M), accuracy (A) and independent (B) marks, error carried forward where the scheme allows it, and positive marking, so you're credited for what you got right.
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Done this paper? Upload your script and CIE Buddy's AI marker marks it question by question against this exact scheme, puts the ticks on your own working and says what each lost mark needed.
Other variants, October/November 2025
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0620/43 questions
Where can I find the 0620/43 October/November 2025 mark scheme?
The mark scheme for IGCSE Chemistry 0620/43, October/November 2025, is the file 0620_w25_ms_43. It's linked on this page, along with the question paper (0620_w25_qp_43).
How many marks is 0620/43 out of?
Chemistry 0620/43 for October/November 2025 is out of 80 marks, with 1 hour 15 minutes to answer it, across 6 questions.
Can I get my 0620/43 answers marked?
Yes. Upload your answers to 0620/43/O/N/25 as a PDF or photos, and CIE Buddy marks every question against this paper's official mark scheme, using Cambridge's marking rules. You get your score, each lost mark explained on your own script, and the topics to revise. It's a guide, not an official Cambridge grade.