Physics, Chemistry and Biology look different on the page but ask similar things of you: read a situation, use the right quantity and unit, and explain the result in a full sentence.
This page shows what the sciences share, where each one differs and who should start where. The Physics, Chemistry and Biology pages hold the chapter lessons.
What do the science subjects share?
Four skills recur across all three:
- Units and conversion: kg, g, cm³, dm³, mol.
- Reading graphs: gradients, trends, intercepts.
- Variables: what is changed, measured and kept the same.
- Explaining: cause, effect and link, in a complete sentence.
If you are weak in any of these, every science feels harder than it is.
One slip across two subjects
Here is an illustrative example. In Physics, a student converts 250 g to kg and writes 250 000 kg, then uses it in F = ma.
In Chemistry, the same student finds moles from 250 cm³ at 0.2 mol/dm³ and writes 250 × 0.2 = 50 mol. The correct working is 250 ÷ 1 000 = 0.25 dm³, then 0.25 × 0.2 = 0.05 mol.
Both losses come from the same unit conversion. The units and significant figure checker drills this directly.
How the subjects differ
| Subject | Main test | Typical loss |
|---|---|---|
| Physics | Choosing and rearranging formulas, reading graphs | Missing the second step |
| Chemistry | Mole calculations, equations, reasoning about reactions | Wrong unit or unbalanced equation |
| Biology | Terms, processes and data interpretation | Missing the reason in an explanation |
| Science | A mix of all three at a lighter level | Weak foundations across topics |
Who should start where?
- Calculation loses marks: repair algebra and units first, then return to the chapter.
- Explanations lose marks: practise the claim, reason, link pattern on short questions.
- New to Form 4 sciences: read the first chapter of each subject and try one exercise before the school test.
The motion graph explorer is one free tool to begin with.
Free learning and one-to-one lessons
The subject pages are free to read. Physics tuition, Chemistry tuition and Biology tuition offer an experienced teacher for one subject, beginning with a one-hour trial class (from RM50).