GCSE Combined Science A (OCR J250)

Six modules · 18 tutorials · worth two GCSEs · Gateway Science

The complete OCR GCSE Combined Science A (Gateway Science) J250 specification — biology, chemistry and physics in one qualification, worth two GCSEs. Twelve papers across two tiers. Harvey and Mendel on biology. Lavoisier and Mendeleev on chemistry. Faraday and Joule on physics.

Specification: OCR J250 (v5.0, 2026)Tiers: Foundation (5–5 to 1–1) + Higher (9–9 to 4–4)Worth: Two GCSEs

Paper 1/7Biology: Cells, Scaling and Organisms3 tutorials · B1–B3

Led by William Harvey Simulacrum

Cell structures and microscopy · enzymes · respiration and photosynthesis · the heart and circulation · transport in plants · the nervous and endocrine systems · homeostasis.

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Paper 2/8Biology: Communities, Genes and Global Challenges3 tutorials · B4–B6

Led by Gregor Mendel Simulacrum

Ecosystems and energy transfer · DNA and inheritance · natural selection and evolution · biodiversity · communicable and non-communicable disease · the immune system · drug development.

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Paper 3/9Chemistry: Particles, Compounds and Reactions3 tutorials · C1–C3

Led by Antoine Lavoisier Simulacrum

The particle model and atomic structure · purity and separation · ionic, covalent and metallic bonding · material properties · equations and conservation of mass · energetics · acids and pH · electrolysis.

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Paper 4/10Chemistry: Predicting, Controlling and Global Challenges3 tutorials · C4–C6

Led by Dmitri Mendeleev Simulacrum

The periodic table · Groups 1, 7 and 0 · reactivity and displacement · rates and collision theory · catalysts and equilibria · metal extraction · the Haber process · the atmosphere and climate change · water treatment.

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Paper 5/11Physics: Matter, Forces and Electromagnetism3 tutorials · P1–P3

Led by Michael Faraday Simulacrum

Density and changes of state · motion, speed and acceleration · Newton’s laws · momentum and stopping distances · static electricity · circuits and Ohm’s law · the National Grid · magnetism and the motor effect.

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Paper 6/12Physics: Waves, Energy and Global Challenges3 tutorials · P4–P6

Led by James Prescott Joule Simulacrum

Transverse and longitudinal waves · the EM spectrum · radioactivity and half-life · nuclear fission and fusion · energy stores and conservation · work, power and efficiency · transport safety · energy resources.

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