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2025 OCR GCSE Chemistry A Higher Tier PAPER 4 MARK SCHEME J248/04
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CR GCSE Chemistry A (Higher Tier) – Paper 4 Mark Scheme (J248/04) – 2025
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CR GCSE Chemistry A (Higher Tier) – Paper 4 Mark Scheme (J248/04) – 2025

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

It includes:

  • Detailed marking points for every question

  • Acceptable alternative answers and scientific terminology

  • Calculation workings and final answers with correct units

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

  • Guidance on practical, data analysis, and interpretation questions

  • Examiner notes explaining common errors and how marks are credited

The mark scheme covers the full Paper 4 content, including chemical analysis, rates and equilibrium, organic chemistry, energy changes, and chemistry of the atmosphere and resources, ensuring complete alignment with the question paper.

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

  • Accurate marking of mock exams

  • Understanding how marks are awarded

  • Improving exam technique

  • Learning how to structure high-level answers at Higher Tier

Specifications
Author virginia
Published 23 Jan 2026
Included files PDF
Chemistry A Higher Tier J248/04 GCSE OCR 2025
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