Programs/Upper Secondary/Pure Chemistry

G3 Pure Chemistry Tuition.

Pure Chemistry at G3 rewards structured chains of reasoning — not memorised facts. Mole calculations, organic reaction patterns, answer-structure all drilled.

Class sizeMax 10
MOE-alignedRefreshed yearly
BranchesBukit Batok · Yishun
TrialFree
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If this sounds familiar

Right mass. Right Mr. Wrong direction.

Your child works out 4.0g of NaOH. Calculates Mr as 40. Then divides 40 by 4 instead of 4 by 40. Moles = 10 instead of 0.1. Every downstream answer is now wrong by a factor of 100. The entire 6-mark stoichiometry question is gone — and they had the chemistry right.

"I keep flipping the formula. Mass over Mr or Mr over mass — I never remember which way."

We drill the mole-ratio checkpoint by name: every mole calculation gets a written unit-check (mol = g ÷ g/mol) before the next line. Five exercises a week, marked for unit logic not just answer. We address the flip early and reinforce it through repeated application, so the easy stoichiometry marks stop leaking.

Yes — that's my child →
Class size
Max 10 most sections sit at 6–8
Fees
$528 per 8-lesson term, all-in
Where
2 branches Bukit Batok · Yishun
Trial
Free a real lesson, no deposit
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Class schedule · Current term

When this class
runs.

G3 Pure Chemistry (Sec 3 & 4) runs at both branches — pick the slot and branch that suits you. Free trial at either centre. WhatsApp us to confirm availability.

01 / Bukit Batok

Blk 265 Bukit Batok East Ave 4 #01-393

  • Sec 3Sat · 12pm – 2pm
  • Sec 4Sat · 10am – 12pm
5-star · 170+ Google reviews
02 / Yishun

417 Yishun Ave 11 #01-339

  • Sec 3Thu · 6:30pm – 8:30pm
  • Sec 4Fri · 6:30pm – 8:30pm
5-star · 92+ Google reviews

Current term timetable · availability confirmed when you book.

Transparent fees

One price. No surprises.

✓ No deposit · No admin · No GST surprises
Sec 3
Sec 3 Pure Chemistry · Single Subject
8-week term · 2 hours per session · Max 10 students · Materials included
$528
Per term, all-in
$66.00
Per session
Book free trial
Most popular · Save 10%
Sec 3 Pure Chem + a 2nd subject · Bundle
Two subjects · Coordinated scheduling
$950.40
$475.20 per subject
$59.40
Per session, per subject
Book free trial
Sec 4
Sec 4 Pure Chemistry · Single Subject
8-week term · 2 hours per session · Max 10 students · Materials included
$544
Per term, all-in
$68.00
Per session
Book free trial
Most popular · Save 10%
Sec 4 Pure Chem + a 2nd subject · Bundle
Two subjects · Coordinated scheduling
$979.20
$489.60 per subject
$61.20
Per session, per subject
Book free trial

Each term covers 8 weekly lessons — we run 8-week cycles rather than following the 10-week MOE school terms. The 10% bundle rate applies when you take 2 or more subjects — any combination, not a fixed pairing. Missed lessons are credited into the next term — credit applies for public holidays, school holidays, official school activities, and absences with a medical certificate.

Curriculum · MOE-aligned

What we cover.

Every topic in the Sec 3 / 4 (G3) Pure Chemistry syllabus, taught in the order that builds skill. We refresh the materials every year against the latest SEAB exam reports.

Syllabus source. This list is checked against the SEAB G3 Chemistry syllabus (K324) for the 2027 SEC. Last checked 16 Aug 2026. Syllabus content is set by MOE and SEAB; the teaching methods described elsewhere on this page are Genie’s own.

·
Atomic structure & bonding
Atoms, isotopes, electronic configuration, ionic / covalent / metallic bonding, molecular structure.
·
Periodic Table & trends
Group I, Group VII, transition elements — properties and trends.
·
Stoichiometry & mole concept
Relative atomic / molecular mass, moles, mole-to-mole ratios, calculations from balanced equations, percentage yield, percentage purity.
·
Acids, bases & salts
pH, indicators, neutralisation, preparation of salts (insoluble, soluble, titration methods), ionic equations.
·
Qualitative analysis (QA)
Cation tests (NaOH, NH₃ aq), anion tests (Cl⁻, SO₄²⁻, CO₃²⁻, NO₃⁻), gas tests, full QA reasoning chains.
·
Redox & electrolysis
Oxidation / reduction, oxidation states, electrolysis of aqueous and molten electrolytes, half-equations.
·
Energy changes
Exothermic / endothermic reactions, energy profile diagrams, bond energy calculations.
·
Rate of reaction
Factors affecting rate, collision theory, rate-time graphs, catalysts.
·
Reversible reactions & ammonia
Reversible reactions, the Haber process, and interpreting data on the conditions used in industry.
·
Organic chemistry — alkanes & alkenes
Combustion, substitution, addition reactions, isomerism.
·
Organic chemistry — alcohols & carboxylic acids
Fermentation, oxidation, esterification, common-acid reactions.
·
Polymers
Addition polymerisation, condensation polymers — nylon and polyester (Terylene) — polymer structures, uses and recycling.
·
Atmosphere & environment
Air pollutants, ozone, the carbon cycle's chemistry.
·
Practical chemistry & planning
Apparatus, methods, data tables, error analysis.
How we teach it

Methodology.

The methods we teach with — applied across the term, calibrated to where each student needs them most.

01
Answer-chain teaching
Markers reward chains of reasoning, not bullet facts. Every concept ends with 'now structure the answer' — claim, evidence, reasoning.
02
Mole concept in a fixed working format
The biggest lost-mark area in Sec 3 — solved by a working format we drill from week one.
03
QA drilled to reflex
Cation, anion, gas tests memorised — and crucially the reasoning chains that connect them. Weekly QA cards.
04
Organic reaction patterns
Reaction types recognised on sight, the right reagents and conditions named, and reactant and product structures drawn accurately.
05
Timed practice · teacher-initiated
Timed practice initiated by teachers for students who need extra exam-condition rehearsal from Sec 4. Returned with personalised topic feedback.
06
Calibrated to the class
Pacing, examples and topic emphasis are tuned to the cohort in front of us. Every Pure Chem class arrives with a different mix of strengths, gaps and pace — so each session pulls its weight rather than running from a fixed script.
07
Every WA tracked & teacher-monitored
Weekly Assignment results are logged against each student by topic, by error pattern, by week. Teachers review trajectories weekly — not at term-end — so wobbles get scheduled back in deliberately, before they harden into prelim losses.
Where students lose marks

Common pitfalls
& how we fix them.

Most lost marks are habit, not knowledge. We track them, name them, and drill them out.

!
Mole stoichiometry — ratio flipped on the second step
N₂ + 3H₂ → 2NH₃. Given 6 moles H₂, find NH₃. Students flip the ratio — 6 × (3/2) = 9 (wrong) instead of 6 × (2/3) = 4 — because they put the "given" species on the wrong side of the fraction. The whole stoichiometry chain collapses. Can cost 2-3 marks per mole calculation, and moles drive 5-6 questions per paper. Fix: a three-row format drilled on every mole problem — Row 1 molar ratio from the balanced equation (with the unknown on top, the given on the bottom), Row 2 moles given, Row 3 multiply for the unknown — completed before any final answer is written.
!
State symbols missing on ionic equations
"HCl + NaOH → NaCl + H₂O" without (aq), (s), (l) is incomplete. Can lose 1 mark per equation — and the same omission bites harder in solubility, precipitation and electrolysis answers, where the state selection drives the equation form. Across a paper that's 3-4 marks gone. Fix: a state-symbol checkpoint built into every ionic equation — (aq), (s), (g), (l) written and checked against the data booklet model answers. Drilled weekly with worked counter-examples.
!
Oxidation states — direction of change reversed
Fe → Fe²⁺ + 2e⁻. Fe is oxidised — its oxidation state goes from 0 to +2 (increases), and it loses electrons. Students write "Fe is reduced because it gains a charge" — the redox direction reversed. Can cost 2-3 marks per redox question, often the whole half-equation question. Fix: a sentence template drilled on the first five redox equations — "element X: state [old] → [new]; loses/gains [n] electrons; therefore oxidised/reduced" — filled end-to-end on every redox answer.
!
Organic reactions — reagent, conditions and product left vague
"It turns bromine colourless" is only part of the answer. What is expected is the reaction type, the reagent, and the product: ethene reacts with bromine in an addition reaction across the C=C to give 1,2-dibromoethane. The same gap shows up on substitution of alkanes by chlorine, and on the alcohol and carboxylic-acid reactions. Can cost 2-3 marks per organic question, and organic is heavily examined at Sec 4. Fix: a reaction-type → reagent → conditions → product template, drilled per reaction until students fill it without thinking.
!
QA tests — right reagent, wrong reasoning
"AgNO₃ added" is the right answer but earns only 1 of 3 marks. Marker wants the full chain: reagent → Cl⁻ ion present → Ag⁺ + Cl⁻ react → AgCl forms (white, insoluble precipitate) → confirms chloride. Can bleed 2 marks per QA question, and it carries real weight when it appears. Fix: weekly QA drill — every test described end-to-end (reagent → observation → ionic equation → ion identity) so the reasoning chain is automatic, not improvised under exam pressure.
Sample technique

How we teach the mole concept in a fixed working format.

Question: "Calculate the volume of CO₂ produced at room temperature and pressure (r.t.p.) when 5 g of CaCO₃ decomposes completely." Most students immediately calculate moles of CaCO₃, then guess the next step. Our working format forces three rows: (1) moles of starting material, (2) ratio from balanced equation, (3) target quantity. So: moles of CaCO₃ = 5/100 = 0.05; CaCO₃ : CO₂ ratio is 1:1 from CaCO₃ → CaO + CO₂; therefore moles CO₂ = 0.05; volume at r.t.p. = 0.05 × 24 = 1.2 dm³. Three rows, every time, no matter how complex the question. The format does the thinking.

Inside the lesson

What a typical lesson looks like.

No surprises. The structure is the same week to week — students settle in fast.

  1. 0–10 min · Recap of last week's hardest concept.
  2. 10–40 min · Topic walkthrough with worked examples and reaction diagrams.
  3. 40–70 min · Structured-answer drill on today's topic.
  4. 70–105 min · Independent practice; teacher walks the room and corrects work where possible.
  5. 105–120 min · Common errors review; homework set.
Real student · Real result

"Genuinely the best teacher around! She really helped push my chemistry grades from just barely passing to an A! Her explanations are simple and clear and overall a very well rounded teacher."

Gabriel Tan · G3 Chemistry · Google review
Where students come from

Schools we serve.

Both branches see Sec 3 / 4 students from across the north and west of Singapore. A snapshot of the schools currently in our classes.

Recent Sec 3 / 4 (G3) Pure Chemistry student schools include: Bukit Batok Secondary · Bukit View Secondary · Hillgrove Secondary · Swiss Cottage Secondary · Dunearn Secondary · Bukit Panjang Government High · Greenridge Secondary · West Spring Secondary · Fuhua Secondary · Hua Yi Secondary · Anderson Secondary · Catholic High · Nan Hua High · Northbrooks Secondary · Yishun Town Secondary · Chong Boon Secondary · Ahmad Ibrahim Secondary · Naval Base Secondary · Orchid Park Secondary · North View Secondary · Peirce Secondary · and more
FAQ

Common questions.

Pure Chemistry rewards students who handle mole calculations confidently, see structure behind reactions, and answer with precise scientific language. Below are the questions parents most often ask before joining a Pure Chem class.

How much is G3 Pure Chemistry tuition at Genie?
Per 8-week term, materials included: Sec 3 Pure Chemistry $528 per 8-week term ($66.00 per session); Sec 4 Pure Chemistry $544 per 8-week term ($68.00 per session). Classes are capped at 10 students and run at both branches — Bukit Batok (Blk 265 Bukit Batok East Ave 4 #01-393) and Yishun (417 Yishun Ave 11 #01-339). Take two or more subjects and the rate drops 10%. The first trial lesson is free.
What's the difference between Pure Chemistry and Combined Science (Chem half)?
Pure Chem is a standalone G3 subject (sat at G3) with deeper content — mole calculations, more organic, full QA. Combined Science chemistry is roughly half the content with broader coverage. Combined Phys+Chem · Combined Bio+Chem
Is your G3 Chemistry tuition aligned to the new GCE syllabus?
Yes — reviewed yearly against SEAB updates.
My child is failing Sec 3 Chemistry. Can you help?
Yes. Most failing Sec 3 cases stem from shaky atomic structure and weak mole-calculation habits. Both are common weaknesses that targeted practice can improve substantially.
Can my child join in Sec 4?
Yes — a focused catch-up plan and teacher-initiated timed practice. Ideally start in January of Sec 4.
How big are the classes?
Max 10. Most Pure Chem sections sit at 6–8.
Do you also teach Pure Physics and Pure Biology?
What time slots do you offer?
Weekday evenings and Saturday daytime, at both Bukit Batok and Yishun. WhatsApp us your preferred day/time and we'll come back with live availability.
Where is your Bukit Batok Pure Chem centre?
Blk 265 Bukit Batok East Ave 4 #01-393 — a short bus ride from Bukit Batok or Hillview MRT. Bukit Batok branch
Where is your Yishun Pure Chem centre?
417 Yishun Ave 11 #01-339 — a short bus ride from Khatib or Yishun MRT. Yishun branch
How do I book a free chemistry trial?
WhatsApp 9181 7689 with your child's level.
Can my child catch up if they join mid-term?
Yes — we can arrange short 1-to-1 bridging sessions to fast-track new joiners up to where the current class is. How much bridging is needed depends on the topics already covered and the gaps we find.
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