OCR GCSE Chemistry Combined Science A Paper 3 2025 Qp

Download the official OCR GCSE Combined Science A Gateway Science J250/03 Chemistry Paper 3 (Foundation Tier) June 2025 question paper PDF. This authentic OCR examiner-issued paper contains the exact questions used in the June 2025 GCSE Chemistry examination series, covering metals and alloys, exothermic and endothermic reactions, ionic bonding, electrolysis of molten sodium chloride, atomic structure, ammonia formation, pH and indicators, magnesium carbonate reactions, separation techniques, intermolecular forces, and chromatography.

The paper includes graph-analysis, calculation, practical-investigation, and extended-response questions involving iron–carbon strength graphs, electrolysis calculations, sodium chloride ionic lattices, electron arrangements, reaction-profile diagrams, ammonia dot-and-cross diagrams, magnesium carbonate and sulfuric acid reactions, and salt-yield investigations. Students will practise AO1 knowledge, AO2 application, and AO3 analysis skills required for OCR GCSE Chemistry examinations.

Use this OCR J250/03 question paper alongside the matching OCR GCSE Chemistry June 2025 mark scheme on markscheme.net for accurate self-assessment, timed mock exams, and examiner-style revision. Fully updated for the 2025/2026 academic year and instantly downloadable for effective OCR GCSE Chemistry preparation.

This document is designed for OCR GCSE Chemistry students preparing for the 2026 examination series, especially Foundation Tier students studying OCR Combined Science A Gateway Science. It is ideal for Year 10 and Year 11 students, resit candidates, independent learners, and home-schooled students who want authentic OCR exam practice under realistic timed conditions.

It is also highly valuable for GCSE Science teachers, tutors, intervention coordinators, revision-course providers, and parents supporting structured revision. The paper can be used for timed assessments, classroom mocks, graph-analysis practice, calculation training, practical-investigation preparation, and improving AO1/AO2/AO3 exam technique using genuine OCR June 2025 examination material.