Cambridge IGCSE Combined Science: Your Complete Guide

Cambridge IGCSE Combined Science (0653) is a single award qualification: you study Biology, Chemistry, and Physics and receive one IGCSE grade. This guide covers papers, Core vs Extended, calculator use, and how to prepare.

What is IGCSE Combined Science?

Combined Science (0653) covers the three sciences in one syllabus. Content is slightly less deep per subject than in Coordinated Science or Triple Science. You sit six papers (2 per science) and receive one IGCSE grade (single award).

Papers you need to choose

You take 6 papers in total:

• Biology: 2 papers (Core or Extended — your school chooses one level for all three sciences).
• Chemistry: 2 papers (Core or Extended).
• Physics: 2 papers (Core or Extended).

You cannot mix Core and Extended across subjects. Most students aiming for strong grades take Extended in all three.

Calculator use

Calculators are allowed in science papers where calculations are required. You must show working and use correct units.

How hard is Combined Science? Is it popular?

• Difficulty: Often seen as slightly lighter per subject than Coordinated Science, but still demanding. Extended across all three sciences is a substantial workload.
• Popularity: Combined Science (0653) is very popular in schools that want a single science qualification without offering three separate sciences.

Top revision tips for Combined Science

1. Practise past papers for each science under timed conditions.
2. Balance revision across Biology, Chemistry, and Physics — all count towards your single grade.
3. Learn key terms and formulae for each subject.
4. Use a resources platform with past papers and revision notes to cover all three sciences efficiently.

How Tutopiya supports IGCSE Combined Science students

Tutopiya specialises in IGCSE and supports Combined Science. Our resources platform includes 200,000+ past papers, AI practice, and revision notes developed over 8+ years. Our tutors include ex- and current international-school teachers and IGCSE board examiners (subject-dependent). You can use the platform for past papers and revision across all three sciences, and book a free trial for 1-to-1 tutoring in Biology, Chemistry, or Physics.

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This guide is for information only. Check the latest syllabus and papers with your school and Cambridge International.