This guide helps Malaysian families choose between IGCSE Physics and Chemistry when their child can only take one science subject.
The ideal scenario: take both
Most science-oriented university courses expect both Physics and Chemistry at IGCSE level. If your child can take both, that is the strongest choice for keeping career options open.
If the school only allows one, or if the workload with both is genuinely unmanageable, here is how to choose.
Physics: what it involves
IGCSE Physics 0625 is built around understanding how the physical world works: motion, forces, energy, waves, electricity and the structure of the atom.
Key skills needed:
- Algebraic manipulation and equation rearrangement
- Graph plotting and interpretation
- Understanding cause-and-effect relationships
- Spatial reasoning (for circuits, ray diagrams, force diagrams)
Best suited for students who:
- Enjoy maths and problem-solving
- Like understanding how things work mechanically
- Want to study engineering, architecture, computing or physical sciences
Chemistry: what it involves
IGCSE Chemistry 0620 covers the structure and properties of matter, chemical reactions, organic chemistry and analytical techniques.
Key skills needed:
- Memorisation of reactions, formulae and compound names
- Balancing equations
- Understanding patterns in the periodic table
- Practical observation skills (colour changes, gas tests)
Best suited for students who:
- Are comfortable with memorisation and pattern recognition
- Enjoy practical experiments and observations
- Want to study medicine, pharmacy, biochemistry or environmental science
Side-by-side comparison
| Feature | Physics 0625 | Chemistry 0620 |
|---|---|---|
| Mathematical demand | High (calculations in most topics) | Moderate (some calculations, mainly moles) |
| Memorisation demand | Moderate (equations, definitions) | High (reactions, compounds, properties) |
| Practical component | Paper 5/6 (measuring, circuits, optics) | Paper 5/6 (titrations, gas tests, observations) |
| Number of topics | 6 | 12 (shorter per topic) |
| Prerequisite maths | Algebra, graphs, unit conversion | Ratios, basic algebra |
Career paths by subject
| Career | Physics needed? | Chemistry needed? |
|---|---|---|
| Engineering (any) | Yes | Recommended |
| Medicine | Recommended | Yes |
| Computer Science | Helpful | Not usually required |
| Architecture | Yes | Not usually required |
| Pharmacy | Not usually required | Yes |
| Environmental Science | Helpful | Yes |
| Business / Law | Neither required | Neither required |
The honest answer
If your child is unsure, Physics is the harder subject to catch up on later because it is cumulative: each topic builds on the previous one. Chemistry has more independent topics that can be studied in isolation. This means a student who drops Physics now and wants to take it at A-Level will have a harder time than one who drops Chemistry and picks it up later.
If the decision is genuinely between one or the other and your child does not have a clear preference, Physics keeps more technical doors open.
Frequently Asked Questions
Is Physics harder than Chemistry?
Can my child take both?
Which is more useful for university?
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.