CHEMISTRY · HKDSE
Chemistry Exam Tips
In the HKDSE Chemistry exam, electrochemical cells and electrolysis represent one of the highest-yield yet most poorly answered areas. Year after year, candidate performance reports highlight a fatal flaw: the lack of precise comparative language. When explaining why a specific i…
Papers
2
Total marks
162
Time limit
3h 30min
Grade scale
Additional note
Calculator policy
Use only calculators on the HKEAA Approved List, bearing the 'H.K.E.A.A. APPROVED' (or older 'H.K.E.A. APPROVED') label. Programmable scientific models (e.g. Casio fx-50FH II, fx-3650P II) are allowed, and you MAY keep your own formulas/programs stored in memory — HKDSE does not require you to clear it. Graphic-display (graphing) and CAS/symbolic calculators are not on the approved list and must not be used.
2
Papers
4
Strategies
6
Mistakes
- In the HKDSE Chemistry exam, electrochemical cells and electrolysis represent one of the highest-yield yet most poorly answered areas. Year after year, candidate performance reports highlight a fatal flaw: the lack of precise comparative language. When explaining why a specific ion discharges at an electrode, simply stating that an ion is "a good oxidising agent" will score zero. You must establish an explicit comparison relative to competing species.
Tips are paraphrased for study purposes from exam structure data and marking patterns. Always verify against your official syllabus and mark scheme.