OCR GCSE Chemistry B Paper 2 2025 Question Paper

Download the official OCR GCSE (9–1) Chemistry B Twenty First Century Science J258/02 Depth in Chemistry Foundation Tier June 2025 Question Paper PDF for the Summer 2025 examination series. This OCR examiner-set paper contains authentic GCSE Chemistry questions covering acids and alkalis, titrations, water treatment, corrosion, nanoparticles, fertilisers, atom economy, electrolysis and Group 1 chemistry.

The paper includes multiple-choice, graph-analysis, practical-method, calculation and extended-response questions on major OCR GCSE Chemistry topics including neutralisation, peer review, chlorine treatment of drinking water, stainless steel properties, buckyballs, synthetic fertilisers, reversible reactions, atom economy, energy profiles, ionic bonding and electrolysis. Students are also required to complete calculations involving percentage increase, relative formula mass, surface area to volume ratio and atom economy using scientific formulas and data analysis.

Practical and analytical questions involve titration methods, energy-change investigations, electrolysis experiments, water-treatment processes, Group 1 metal reactions and nanoparticle risk evaluation. The paper also tests scientific reasoning, graph interpretation, experimental planning and evaluative Chemistry skills required for OCR GCSE Chemistry examinations in 2026.

Perfect for GCSE Chemistry revision, timed mock exams, classroom assessment, practical-skills development and examiner-standard preparation. Best used together with the matching OCR J258/02 Mark Scheme for accurate self-assessment and OCR examiner feedback.

This document is designed for OCR GCSE (9–1) Chemistry B Twenty First Century Science students preparing for the 2026 examination series, including Year 10 and Year 11 learners, tutors, teachers, revision centres, private candidates 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 authentic OCR examination questions, practical investigations and examiner-style calculations.