DSE Chemistry

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DSE chemistry titration bench: a burette with a drop at its tip above a conical flask on a stirrer, with a test-tube rack, a graduated cylinder, a ball-and-stick molecule model and an unlit Bunsen burner.

Connect particles, properties and reactions, then build quantitative, practical and elective-topic skills.

  • Connect visible observations, particle changes and chemical symbols in one explanation
  • Use units, mole relationships and plausibility checks to reduce calculation losses
  • Infer conclusions from practical procedures and observations instead of memorising results
  • Organise conditions, products and organic conversions through reaction networks
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Course highlights

Conceptual understanding Connect macroscopic, particle and symbolic levels Trace an observation to particle changes, then represent the process through equations, structures and data.
Observation to particles
Use collisions, bonding, electrons or particle arrangement to explain visible changes.
Particles to symbols
Translate microscopic processes into correct formulae, ionic equations and equations.
Distinguish concepts
Compare easily confused reactions, structures, bonding and properties.
 Quantitative chemistry Use a calculation process in which every step is traceable Organise quantities and chemical relationships before calculating and checking units, significant figures and plausibility.
Known and target quantities
Write values, units and the target before using the calculator.
Mole relationship as the spine
Connect mass, concentration, gas volume and particles through equation ratios.
Check the result
Use units, order of magnitude, limiting reagents and context to verify the answer.
 Practical analysis Move from procedure and observation to inference Understand what each step controls or measures and which conclusion the result can support.
Purpose of procedures
Explain choices in apparatus, rinsing, measurement and safety.
Separate observation and inference
Record colour, precipitate, gas or readings before making a chemical judgement.
Analyse error direction
Determine how an error affects a calculation or conclusion.
 Reaction organisation Replace isolated memorisation with reaction networks Place reactants, conditions, products, observations and uses in one conversion map.
Conditions determine routes
Compare how temperature, catalysts, reagents and environment alter outcomes.
Organic conversion chains
Use functional groups and reaction types to infer feasible synthesis steps.
Transfer to unfamiliar reactions
Apply established patterns to unseen substances or contexts.
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Course content

Planet Earth and the microscopic world
Earth resources, atomic structure, chemical bonding and material properties.
Metals, acids and bases
Reactivity, extraction, corrosion, acid-base reactions and volumetric analysis.
Carbon compounds
Fossil fuels, organic compounds, reactions, polymers and structural patterns.
Redox and electrochemistry
Oxidation-reduction, chemical cells, electrolysis and applications.
Energetics, rates and equilibrium
Enthalpy changes, reaction rates, catalysis and chemical equilibrium.
Industrial chemistry
Elective topic covering processes, efficiency, safety and environmental effects.
Materials chemistry
Elective topic covering material structure, properties, preparation and uses.
Analytical chemistry
Elective topic covering qualitative, quantitative and instrumental analysis.

Course fees

4 lessons per month 90 minutes per lesson

Fees by level

S4
HK$1,380/ 4 lessons
S5-S6
HK$1,560/ 4 lessons
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