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2025 OCR A Level Chemistry B (Salters) Paper 3 and Mark Scheme
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2025 OCR A Level Chemistry B (Salters) Paper 3 and Mark Scheme
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2025 OCR A Level Chemistry B (Salters) Paper 3 and Mark Scheme

  • Paper code: H433/03 Practical Skills in Chemistry (the “Paper 3” for A‑Level Chemistry B Salters). 

  • Purpose: assesses practical skills and data‑analysis skills in chemistry, tested through a written exam (with a practical insert). 

  • In the full A‑Level assessment: Paper 3 accounts for 60 marks, and represents 22% of the total A‑Level grade in Chemistry B.

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Author Proficient Academic Tutor
Published 08 Dec 2025
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OCR A Level Chemistry B H433/03 Paper 3 2025 exam practical skills data analysis experimental chemistry mark scheme
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