OCR GCSE Combined Science Paper 8 2025 Mark Scheme

Access the official OCR GCSE Combined Science B Twenty First Century Science J260/08 Combined Science (Higher Tier) June 2025 mark scheme PDF. This examiner-approved OCR document contains the exact accepted answers, mark allocations, assessment-objective guidance, level descriptors, and examiner instructions used during marking for the June 2025 GCSE Combined Science examination series.

The mark scheme includes detailed answers and examiner guidance for composite materials, sulfur dioxide pollution, reaction-rate investigations, gas exchange in fish gills, radioactive contamination and irradiation, gallium-67 medical imaging, metal reactivity experiments, electrolysis of potassium chloride, wave calculations, microscopy, stomatal density, climate change evidence, combustion calculations, fibre intake and cardiovascular disease risk. It also explains how OCR awards marks for AO1 knowledge, AO2 application, AO3 analysis, graph interpretation, practical investigations, calculations, and Level 3 extended-response science questions.

Use this OCR J260/08 mark scheme alongside the matching OCR GCSE Combined Science June 2025 question paper on markscheme.net for accurate self-assessment, timed mock-exam practice, and examiner-style revision. Fully updated for the 2025/2026 academic year and instantly downloadable for effective OCR GCSE Combined Science preparation.

This document is designed for OCR GCSE Combined Science students preparing for the 2026 examination series, especially Higher Tier students studying OCR Combined Science B Twenty First Century Science. It is ideal for Year 10 and Year 11 students, resit candidates, independent learners, and home-schooled students who want to understand exactly how OCR examiners award marks across Biology, Chemistry, and Physics topics.

It is also highly valuable for GCSE Science teachers, tutors, intervention coordinators, revision-course providers, and parents supporting structured revision. The mark scheme can be used to model high-level answers, improve scientific terminology, analyse examiner expectations, strengthen AO1/AO2/AO3 exam skills, and identify common mistakes before the 2026 OCR GCSE Combined Science examinations.