OCR GCSE Chemistry B Paper 1 2025 Question Paper

Download the official OCR GCSE (9–1) Chemistry B Twenty First Century Science J258/01 Breadth 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 greenhouse gases, metallic bonding, Group 7 chemistry, chromatography, covalent structures, electrolysis, crude oil fractions and rates of reaction.

The paper includes multiple-choice, graph-analysis, practical-method, calculation and extended-response questions on major OCR GCSE Chemistry topics including climate change, carbon dioxide emissions, metallic structures, displacement reactions, giant covalent structures, ammonia bonding, crude oil fractions, empirical formulae, life-cycle assessments, catalysts, plastics and atomic structure. Students are also required to complete calculations involving Rf values, mean averages, reaction rates and atomic-scale calculations using scientific notation.

Practical and analytical questions involve chromatography investigations, waste-water treatment, Group 7 displacement reactions, limestone and hydrochloric acid experiments, catalyst investigations and recycling-life-cycle assessments. The paper also tests scientific reasoning, graph interpretation and experimental evaluation 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 J258/01 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.