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2025 OCR GCSE Chemistry B Higher Tier PAPER 4 MARK SCHEME J258/04
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OCR GCSE Chemistry B (Higher Tier) – Paper 4 Mark Scheme (J258/04) – 2025
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OCR GCSE Chemistry B (Higher Tier) – Paper 4 Mark Scheme (J258/04) – 2025

This mark scheme provides the official guidance for marking Paper 4 of the OCR GCSE Chemistry B (9–1) Higher Tier examination, clearly showing how marks are awarded and what examiners expect in high-scoring responses.

It includes:

  • Detailed marking points for every question

  • Accepted alternative answers and correct scientific terminology

  • Step-by-step calculation guidance, including method marks and final answers

  • Level-of-response descriptors for extended and evaluative questions

  • Support for practical-based, data analysis, and interpretation questions

  • Examiner notes highlighting common mistakes and how marks are credited

The mark scheme aligns fully with Paper 4 content, covering advanced topics such as rates of reaction, equilibrium, organic chemistry, chemical analysis, and using resources, ensuring accurate and consistent marking.

This resource is ideal for teachers, tutors, examiners, and students, supporting:

  • Accurate marking of mock exams

  • Understanding examiner expectations

  • Improving exam technique

  • Learning how to structure high-level Higher Tier answers

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Author virginia
Published 23 Jan 2026
Included files PDF
2025 OCR GCSE Chemistry B Higher Tier PAPER 4
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