HKDSE Chemistry study guide
HKDSE Chemistry · Work through your exam, one topic at a time.
The Hong Kong Diploma of Secondary Education (HKDSE) is Hong Kong's senior secondary school-leaving qualification, administered by the Hong Kong Examinations and Assessment Authority (HKEAA). Chemistry is one of the Category A Senior Secondary elective subjects, alongside Biology, Physics, Chinese Literature, Literature in English and others. Category A subjects are the mainstream academic subjects taken by school candidates, in contrast with Category B Applied Learning subjects and Category C Other Languages subjects. Because Chemistry is an elective, candidates take it in addition to the four core subjects (Chinese Language, English Language, Mathematics and Citizenship and Social Development), which were optimised under measures applicable to the 2024 HKDSE and beyond and implemented from Secondary 4 in the 2021/22 school year. The Chemistry curriculum and assessment arrangements are set out in the HKEAA's Assessment Framework and Curriculum and Assessment Guide, and School-based Assessment operates within the HKDSE assessment arrangements. Results are reported on a standards-referenced scale from Level 1 to Level 5 , and the HKEAA publishes samples of candidates' performance, sample papers and level descriptors as public reference material. Topics on this exam: Chemistry (Category A Senior Secondary Elective Subject). The HKDSE Chemistry study guide has 1 section and about 471 words.
01HKDSE Chemistry - Compulsory Concepts and Elective Applications
HKDSE Chemistry (Category A Senior Secondary Elective Subject) assesses the compulsory curriculum - Planet Earth, Microscopic World I and II, Metals, Acids and Bases, Redox, Chemical Cells and Electrolysis, Chemical Reactions and Energy, Rate of Reaction, Chemical Equilibrium, Carbon Compounds and Patterns in the Chemical World - plus one elective: Industrial Chemistry, Materials Chemistry or Analytical Chemistry. Paper 1 tests compulsory content; Paper 2 tests the elective. Marks depend on correct equations, units, and particle-level or energy-level explanations, not just final numbers. Mole and stoichiometry: use n = m/M and n = cV; convert cm³ to dm³ by dividing by 1000.
471 words, about 2 minMore study resources for HKDSE Chemistry
- Practice questionsWhich statement correctly describes the trend in first ionisation enthalpy across Period 3 from Na to Ar?
- FlashcardsMole definition. One mole contains 6.022×10^23 particles (Avogadro constant).
- Cheat sheetMole relations: n = m/M = N/L (L = 6.022×10^23 mol^-1); at room conditions molar volume ≈ 24.0 dm^3 mol^-1 (molar volume of gas at s.t.p.
- Key termsmole. The amount of substance containing 6.02 × 10^23 specified particles (Avogadro's constant).
- Study planBuild a one-page formula and definition sheet covering atomic structure, the periodic table trends, ionic and covalent bonding, and intermolecular forces, writing each entry from memory before checking notes.
- Common mistakesCandidates memorise 'word equation to formula equation' steps and stop there; they also treat state symbols as decoration rather than part of the required answer format.
- Exam-day guideBring the admission documents issued for this exam plus the identity document the HKEAA requires for verification.