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Brainlag

GCSE Combined and Separate Science

Biology, chemistry and physics, with answers marked as you go.

78 of the 209 lessons are free. The full course comes with Brainlag Plus.

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  • All 5 GCSE courses in full
  • Mock papers, and new questions on every topic test
  • Every printable pack

209 lessons, 78 free

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Combined ScienceSeparate sciences

BiologyChemistryPhysics

Combined science or separate sciences?

Not sure? Ask your teacher. Most students take combined.

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    Mixed practice

    10 questions across the course.

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    The course, unit by unit

    Exam board
    Tier

    Part 1: Biology

    8 units, 59 lessons

    1. Unit 1: Cell biology

      2 hr 15 minFree

      Exam boardsAQA 4.1Edexcel Topics 1 and 2OCR B1 and B2

    2. Unit 2: Organisation: tissues, organs, digestion and circulation

      3 hr 15 min2 free lessonsPlus

      Exam boardsAQA 4.2Edexcel Topics 2 and 8OCR B2 and B3

    3. Unit 3: Infection and response

      2 hr 40 min2 free lessonsPlus

      Exam boardsAQA 4.3Edexcel Topic 5OCR B5

    4. Unit 4: Bioenergetics: photosynthesis and respiration

      2 hr 50 min2 free lessonsPlus

      Exam boardsAQA 4.4Edexcel Topics 6 and 8OCR B1.3 and B1.4

    5. Unit 5: Homeostasis and response

      3 hr 20 min2 free lessonsPlus

      Exam boardsAQA 4.5Edexcel Topic 7OCR B3

    6. Unit 6: Inheritance, variation and evolution

      3 hr2 free lessonsPlus

      Exam boardsAQA 4.6Edexcel Topics 3 and 4OCR B5 and B6

    7. Unit 7: Ecology

      3 hr2 free lessonsPlus

      Exam boardsAQA 4.7Edexcel Topic 9OCR B4.1 and B6

    8. Unit 8: Required practicals and maths skills

      2 hr 20 min2 free lessonsPlus

      Exam boardsAQA required practicals and maths requirementsEdexcel core practicalsOCR practical activity groups and maths skills

    Part 2: Chemistry

    11 units, 68 lessons

    1. Unit 9: Atomic structure and the periodic table

      2 hr 30 min6 free lessonsPlus

      Exam boardsAQA 4.1Edexcel Topics 1, 2, 5 (5.1C, Chemistry only) and 6OCR C1, C2.1 and C4.1 (transition metals)

    2. Unit 10: Bonding, structure and the properties of matter

      2 hr 10 min2 free lessonsPlus

      Exam boardsAQA 4.2Edexcel Topic 1OCR C2.2

    3. Unit 11: Quantitative chemistry and the mole

      2 hr 10 min2 free lessonsPlus

      Exam boardsAQA 4.3Edexcel Topics 1 and 5OCR C3.1

    4. Unit 12: Chemical changes: reactivity, acids and electrolysis

      2 hr 40 min2 free lessonsPlus

      Exam boardsAQA 4.4Edexcel Topics 3 and 4OCR C3.2 to C3.4

    5. Unit 13: Energy changes

      1 hr 40 min2 free lessonsPlus

      Exam boardsAQA 4.5Edexcel Topic 7 (1CH0 Topic 9 for fuel cells)OCR C3.1

    6. Unit 14: Rates of reaction and equilibrium

      2 hr 40 min2 free lessonsPlus

      Exam boardsAQA 4.6Edexcel Topics 4 and 7OCR C5

    7. Unit 15: Organic chemistry

      2 hr 40 min2 free lessonsPlus

      Exam boardsAQA 4.7Edexcel Topics 8 and 9OCR C6.2

    8. Unit 16: Chemical analysis

      1 hr 45 min2 free lessonsPlus

      Exam boardsAQA 4.8Edexcel Topics 2 and 9OCR C2.1 and C4.2

    9. Unit 17: The Earth's atmosphere

      2 hr 40 min3 free lessonsPlus

      Exam boardsAQA 4.9 (lessons 3 to 6 also cover 4.10, taught in full in Using resources)Edexcel Topic 8 (lessons 3 to 6 also cover parts of Topics 2, 4, 5 and 9)OCR C6.3 (J250: C6.2), with lessons 3 to 6 also covering C6.1

    10. Unit 18: Using resources

      2 hr 25 min2 free lessonsPlus

      Exam boardsAQA 4.10 (4.10.1.4 Higher; 4.10.3 and 4.10.4 Chemistry only)Edexcel Topics 2 and 4 (1CH0 also Topics 5 and 9)OCR C6.1, with potable water in C6.3 (J250: C6.1 and C6.2)

    11. Unit 19: Required practicals and maths skills

      2 hr 5 min2 free lessonsPlus

      Exam boardsAQA required practicals and maths requirementsEdexcel Topic 0 and core practicalsOCR practical activity groups and maths skills

    Part 3: Physics

    13 units, 82 lessons

    1. Unit 20: Energy stores, transfers and efficiency

      2 hr 35 minFree

      Exam boardsAQA 4.1Edexcel Topics 3 and 8 (specific heat capacity: Topic 14)OCR P7 and P8.2; P5 and P6.2 (specific heat capacity: P1.2)

    2. Unit 21: Electric circuits

      2 hr 10 min2 free lessonsPlus

      Exam boardsAQA 4.2.1 and 4.2.2Edexcel Topic 10OCR P3.1 and P3.2

    3. Unit 22: Mains electricity, the National Grid and static

      2 hr 10 min2 free lessonsPlus

      Exam boardsAQA 4.2.3, 4.2.4 and 4.2.5Edexcel Topic 10 (static: 1PH0 Topic 11)OCR P3.3 (static: J249 P3.1)

    4. Unit 23: Particle model, density and gas pressure

      2 hr 35 min2 free lessonsPlus

      Exam boardsAQA 4.3Edexcel Topic 14OCR P1

    5. Unit 24: Atomic structure and radioactivity

      2 hr 15 min2 free lessonsPlus

      Exam boardsAQA 4.4Edexcel Topic 6OCR P6 and P4

    6. Unit 25: Forces, work, elasticity, moments and pressure

      2 hr 20 min2 free lessonsPlus

      Exam boardsAQA 4.5.1 to 4.5.5Edexcel Topics 8, 9 and 15OCR P2.3

    7. Unit 26: Forces and motion

      2 hr 40 min2 free lessonsPlus

      Exam boardsAQA 4.5.6Edexcel Topic 2OCR P2.1 and P2.2

    8. Unit 27: Momentum

      1 hr 55 min2 free lessonsPlusHigher

      Exam boardsAQA 4.5.7Edexcel Topic 2OCR P2.2

    9. Unit 28: Waves and the electromagnetic spectrum

      2 hr2 free lessonsPlus

      Exam boardsAQA 4.6.1.1, 4.6.1.2 and 4.6.2Edexcel Topics 4 and 5OCR P5 (J249), P4.1 and P4.2 (J250)

    10. Unit 29: Lenses, visible light, sound and black bodies

      2 hr 50 min2 free lessonsPlusPhysics only

      Exam boardsAQA 4.6.1.3 to 4.6.1.5, 4.6.2.5, 4.6.2.6 and 4.6.3Edexcel Topics 4 and 5 (5.1P total internal reflection)OCR P5

    11. Unit 30: Magnetism and electromagnetism

      2 hr 15 min2 free lessonsPlus

      Exam boardsAQA 4.7Edexcel Topics 12 and 13OCR P4 and P3.4

    12. Unit 31: Space physics

      2 hr 15 min2 free lessonsPlusPhysics only

      Exam boardsAQA 4.8Edexcel Topic 7OCR P8.2

    13. Unit 32: Required practicals, maths skills and the equations

      3 hr 15 min2 free lessonsPlus

      Exam boardsAQA required practicals 1 to 10, maths requirements and the Physics equation sheetEdexcel Topic 1 and core practicalsOCR practical activity groups and maths skills

    Separate science extras

    Topics only in the separate sciences, so not part of Combined Science. Open any of them if you want to.

    Biology: 7 lessons
    Chemistry: 17 lessons
    Physics: 24 lessons

    Mock papers and topic tests

    A topic test ends every unit. Mock papers are timed like the real exams and marked when you hand them in.

    7 more mock papers

    Included in Plus

    Revise and practise alongside

    Questions

    Which exam boards does GCSE Combined and Separate Science cover?

    It follows AQA, Pearson Edexcel and OCR Gateway, Combined Science and the separate sciences. Choose your board above to see its references. Higher-only lessons are marked; Foundation above hides them.

    Is it for Combined Science or the separate sciences?

    Both. Separate-science lessons are marked; Combined above hides them.

    What is free?

    78 of the 209 lessons, and each unit's topic test. Brainlag Plus opens the rest of the lessons, new questions on every topic test and the mock papers.

    Do I need an account?

    No. Progress saves in this browser; sign in to keep it on every device.

    How long does it take?

    About 79 hr 20 min of lessons in 32 units. Lessons take 15 to 30 minutes each.

    AQA, Pearson Edexcel and OCR are trade marks of their owners. Brainlag is independent of every exam board; all questions are original.