Edexcel · GCSE
494 lessons across 3 units
This is the complete topic map for the Edexcel GCSE Combined Science course — every unit and topic from the specification in one place: 494 lessons across 3 units, from Biology to Physics. Each topic below opens a focused revision lesson, so revision can start from the course as the exam board organises it — not from a guess about what might come up. Lessons marked Higher cover content that only appears on Higher-tier papers; everything unmarked is for all students.
Topic 1 – Key concepts in biology
Topic 2 – Cells and control
Topic 3 – Genetics
Topic 4 – Natural selection and GM
Topic 5 – Health & disease
Topic 6 – Plant structures
Topic 7 – Animal coordination
Topic 8 – Exchange and transport
Topic 9 – Ecosystems
Topic 0 – Formulae, equations and hazards
Topic 1 – Key concepts
Topic 2 – States and mixtures
Topic 3 – Chemical change
Topic 4 – Extracting metals & equilibria
Topic 6 – Groups in periodic table
Topic 7 – Rates and energy
Topic 8 – Fuels and Earth science
Topic 1 – Key concepts of physics
Topic 2 – Motion and forces
Topic 3 – Conservation of energy
Topic 4 – Waves
Topic 5 – Light and EM
Topic 6 – Radioactivity
Topic 8 – Energy/forces doing work
Topic 9 – Forces and effects
Topic 10 – Electricity and circuits
Topic 12 – Magnetism and motor
Topic 13 – Electromagnetic induction
Topic 14 – Particle model
The course is organised into 3 units: Biology (112 lessons), Chemistry (177 lessons) and Physics (205 lessons). Together that's 494 lessons — the whole course, with nothing skipped and nothing added.
Little and often beats cramming. One topic a night, done properly — read it, try the questions, check yourself — moves a grade more than a weekend binge the week before the exam. The list above is deliberately complete so you can tick through it a topic at a time.
Start from what's coming up, not from the beginning. If a class test or mock is near, open the unit it covers and work through those topics first. Between assessments, work through units in order — later topics usually build on earlier ones.
For parents:you don't need to know the subject to help. Ask which topic tonight's lesson was, open it here, and let them teach it back to you — explaining something out loud is one of the most effective revision techniques there is. Signed-in students see ticks appear on this page as topics are completed, so progress through the course is visible at a glance.
Edexcel GCSE Combined Science covers 494 topics across 3 units: Biology, Chemistry and Physics. Each topic on this page opens a focused revision lesson.
There are 494 topics in Edexcel GCSE Combined Science, grouped into 3 units. Some content is marked Higher tier and only appears on Higher-tier papers.
Yes — this page lists every unit and topic on the Edexcel GCSE Combined Science specification, in the order the exam board organises it. Nothing is skipped and nothing is added.