OCR GCSE Chemistry Paper 2 2025 Mark Scheme

Download the official OCR GCSE (9–1) Chemistry A Gateway Science J248/02 Paper 2 Foundation Tier June 2025 Mark Scheme PDF for the Summer 2025 examination series. This OCR examiner-approved mark scheme contains full accepted answers, indicative content, assessment-objective guidance, level-of-response criteria, calculation methods and examiner commentary used during official OCR GCSE Chemistry marking.

The mark scheme covers major OCR GCSE Chemistry topics including rates of reaction, equilibrium, reversible reactions, catalysts, fuels, Earth’s atmosphere, corrosion prevention, electrolysis, alloys, atom economy, polymers, alcohols, displacement reactions, titrations and environmental chemistry. Students can revise key Chemistry concepts such as activation energy, collision theory, flame tests, chromatography, halogen displacement, catalysts and percentage calculations using authentic OCR examiner guidance.

This June 2025 OCR Chemistry mark scheme includes detailed guidance for multiple-choice questions, practical-method questions, graph interpretation, calculations, experimental planning and extended-response answers. It explains how OCR awards AO1, AO2 and AO3 marks in scientific reasoning, practical skills, data analysis, evaluation and level-based Chemistry responses required for top-band GCSE answers.

Perfect for GCSE Chemistry revision, mock-paper marking, examiner-standard self-assessment, intervention sessions, classroom assessment and OCR 2026 exam preparation. Best used together with the matching OCR J248/02 Question Paper for complete examiner-standard revision practice.

This document is designed for OCR GCSE (9–1) Chemistry A Gateway Science students preparing for the 2026 examination series, including Year 10 and Year 11 learners, tutors, teachers, private candidates, revision centres and home-school students studying Foundation Tier Chemistry.

It is especially useful for students aiming to improve AO1 scientific knowledge, AO2 application skills and AO3 analytical and evaluative Chemistry skills using official OCR examiner guidance, practical-method marking criteria and authentic calculation techniques.