This guide helps parents decide between IGCSE Physics 0625 (standalone) and Cambridge IGCSE Combined Science 0653. Both are valid qualifications, but they serve different purposes.
What is the difference?
IGCSE Physics 0625 is a full single-subject qualification covering six topic areas in depth. It is graded A* to G (Extended) or C to G (Core).
IGCSE Combined Science 0653 covers biology, chemistry and physics in a single qualification. The physics content is a subset of the 0625 syllabus, covering fewer subtopics and at a lower demand level.
Content comparison
| Feature | Physics 0625 | Combined Science 0653 |
|---|---|---|
| Physics topics covered | 6 full topics, 46 subtopics | 4 to 5 topics, fewer subtopics |
| Mathematical demand | Higher (multi-step calculations, graph interpretation) | Lower (mostly single-step calculations) |
| Practical component | Paper 5 or Paper 6 | Paper 5 or Paper 6 (shared with biology and chemistry) |
| Extended/Supplement content | Yes (required for grades A* to C) | Limited |
| Space Physics (Topic 6) | Included | Not included |
| Grade range | A* to G | A* to G |
When to choose standalone Physics
- Your child is interested in engineering, medicine, or any science degree at university.
- The target university lists “Physics” as a specific entry requirement.
- Your child is strong in mathematics and enjoys problem-solving.
- Your child wants to take A-Level Physics afterward.
When to choose Combined Science
- Your child wants a broad science education without specialising.
- The school timetable does not allow three separate sciences.
- Your child’s target career or university does not require standalone Physics.
- Your child finds science interesting but does not plan to study it at A-Level.
The university question
This is a key factor for many families. Check the entry requirements of your child’s target universities and courses before choosing. Engineering and physical science courses at universities like NUS, Melbourne, Imperial or NTU typically require standalone Physics.
What our tutors recommend
If your child has any interest in a science or engineering pathway, standalone IGCSE Physics keeps more doors open. The extra workload compared to the physics component of Combined Science is manageable with structured revision and the right support.
If the decision has already been made and your child is taking Combined Science, the physics skills they build are still valuable. The principles of measurement, forces, energy and electricity transfer directly to many careers and further study.
Frequently Asked Questions
Is Combined Science easier than standalone Physics?
Will universities accept Combined Science instead of Physics?
Can my child switch from Combined Science to standalone Physics?
Next useful steps
Need Help Applying This?
A 0625 specialist can work through the student's current paper or question and help identify whether the main difficulty is content, mathematics, practical reasoning or exam technique.