iGCSE

Cambridge International iGCSE Combined Science Revision

Adaptive practice aligned to the Cambridge Assessment International Education (CAIE) specification. 10 topics, exam-style questions, and instant AI feedback.

Start Revising Free All Exam Boards

About Cambridge International iGCSE Combined Science

Cambridge International sets the globally recognised iGCSE and International A-Level qualifications, taken by students in over 160 countries. Popular in UK independent schools and international school settings.

Cambridge International iGCSE Combined Science offers you a comprehensive double award qualification across three papers, each lasting 1 hour 15 minutes, totalling 180 marks. You'll tackle Papers 1, 2, and 3, with each paper containing multiple-choice and structured short-answer questions that test both knowledge and application skills. Cambridge International's distinctive approach integrates Biology, Chemistry, and Physics concepts throughout, rather than separating them into isolated units. Their marking style emphasises understanding of scientific principles and practical application, with command words like 'explain', 'analyse', and 'evaluate' requiring you to demonstrate depth beyond simple recall. This specification is particularly valued in international schools and UK independent settings for its rigorous, globally-recognised standard.

Topics in Cambridge International iGCSE Combined Science

1 Cell Biology

2 Atomic Structure

3 Forces & Motion

4 Ecology

5 Chemical Reactions

6 Electricity

7 Human Physiology

8 Organic Chemistry

9 Waves

10 Genetics

Study Tips for Cambridge International Combined Science

Create topic-specific revision cards for each of the ten content areas, but link concepts across Biology, Chemistry, and Physics as Cambridge International does in their integrated papers. For example, connect atomic structure to bonding in organic chemistry and electrical conductivity—this mirrors how their papers combine disciplines.

Practice past papers systematically by paper, not by topic. Cambridge International's Papers 1-3 each contain questions from all three sciences mixed together. Working through complete papers develops your ability to switch between subject contexts quickly, which is essential for their exam format.

Focus on command word practice with Cambridge International's preferred language. Their papers frequently use 'explain', 'describe', 'analyse', and 'evaluate'—each requiring different response depths. Allocate marks to your answers based on command words; 'explain' typically needs 2+ marks worth of detail.

Use Cambridge International's specimen papers and mark schemes to understand their marking rubrics. They award marks for specific scientific terminology and logical reasoning steps—generic answers lose marks. Study how they allocate marks within questions to maximise your scoring strategy.

Exam Tips for Cambridge International Combined Science

Manage your time across three 75-minute papers by aiming for roughly 2.4 minutes per mark (180 marks ÷ 75 minutes). Cambridge International's Papers 1-3 contain approximately 60 marks each, so allocate 25 minutes per section. Don't spend excessive time on multiple-choice; move quickly to structured questions where you can earn higher marks.

Answer all multiple-choice questions first—they're quick wins worth 20-25% of each paper's marks. Cambridge International's structured questions later in each paper often build on concepts tested in multiple-choice, so completing these first helps refresh your knowledge before tackling longer-form answers.

Read Cambridge International's command words carefully and match your response length to mark allocation. A 1-mark question needs a brief statement; 3-mark 'explain' questions need reasoning with evidence. Cambridge International's mark schemes show they reward structured explanations with linking statements like 'because' and 'this means'—use these phrases to scaffold answers.

Frequently Asked Questions

How many papers are in Cambridge International iGCSE Combined Science?

Cambridge International iGCSE Combined Science consists of three equally-weighted papers (Papers 1, 2, and 3), each lasting 1 hour 15 minutes and worth 60 marks. The papers are not separated by discipline; each contains an integrated mix of Biology, Chemistry, and Physics questions. The total qualification is worth 180 marks, with each paper contributing one-third of your final grade.

What topics does Cambridge International iGCSE Combined Science cover?

Cambridge International's Combined Science specification covers ten integrated topic areas: Cell Biology, Atomic Structure, Forces & Motion, Ecology, Chemical Reactions, Electricity, Human Physiology, Organic Chemistry, Waves, and Genetics. Unlike some exam boards, Cambridge doesn't separate these into Biology, Chemistry, and Physics silos. Instead, their papers weave these topics together, requiring you to make connections across disciplines—for instance, linking atomic structure to organic chemistry bonding.

Is Cambridge International iGCSE Combined Science hard?

Cambridge International iGCSE Combined Science is considered rigorous but fair. Its difficulty stems from the integrated, non-linear paper structure rather than content complexity alone. You'll encounter questions that blend disciplines, requiring conceptual flexibility. The marking criteria prioritise explanation and analysis over simple recall, so success depends on deep understanding and clear communication. International schools typically find Cambridge's approach challenging but rewarding, as it develops strong scientific reasoning skills valued globally.