OCR GCSE Chemistry Revision
OCR offers two GCSE Chemistry routes: Gateway (Chemistry A) and Twenty First Century (Chemistry B). Both cover the core science: particles and atomic structure, bonding, quantitative chemistry, reactions, organic chemistry and analysis. Both are assessed entirely through written papers at the end of the course.
This page lists every Chemistry topic in Recall. Each topic page works equally well for either OCR route, the underlying chemistry is identical, only the framing and question style differ. Pre-loaded notes mean you can generate flashcards or exam-style questions in a single click.
OCR examiners reward clear, structured explanations and the correct use of chemical vocabulary. Practising extended questions on the topics below, and self-marking against the spec, is one of the highest-leverage things you can do.
Chemistry topics on OCR
Every topic below works for the OCR GCSE Chemistry syllabus. Click any topic to load its notes and generate flashcards, a quiz or exam-style questions.
- Atomic StructureRevise atomic structure for GCSE and A-Level Chemistry. Sub-atomic particles, isotopes, electron configuration, mass spectrometry and ionisation energy.
- Chemical BondingRevise A-Level Chemistry chemical bonding with clear notes on ionic, covalent and metallic bonding, polarity, molecular shapes, intermolecular forces and exam questions.
- The Periodic TablePeriodic table revision for GCSE and A-Level Chemistry: groups, periods, alkali metals, halogens, noble gases, periodicity, ionisation energy trends, transition metals, plus exam questions with mark points.
OCR Chemistry FAQs
What's the difference between OCR Gateway and Twenty First Century Chemistry?+
Both are full OCR GCSE Chemistry qualifications, but they organise the same core content differently. Gateway (Chemistry A) is topic-by-topic; Twenty First Century (Chemistry B) is built around scientific issues and contexts. Pick the one your school follows, the underlying chemistry is the same.
How is OCR GCSE Chemistry examined?+
OCR GCSE Chemistry is assessed by two written papers at the end of the course, with no coursework. Both papers include questions on the practical activities specified in the syllabus.
What's the best way to revise for OCR Chemistry?+
Work through the topic list below using active recall, generate flashcards, self-test, then write extended answers from memory. Check them against the OCR specification statements to make sure you're using the wording examiners want.
Start revising OCR Chemistry now
Generate flashcards, quizzes and exam-style questions from any topic above, or paste your own class notes into the Recall tool.