Online Secondary Chemistry Tuition in Singapore: One-to-One and Small-Group Tutors for G3 Chemistry and Combined Science
In Sec 3 and Sec 4, Chemistry becomes a full subject: mole calculations, tests that identify unknown ions and gases, and explanations of why elements react the way they do. onlinetuition.sg matches Secondary students with Chemistry tutors for live online lessons, one-to-one or in small groups, whether they take G3 Chemistry or the Chemistry in G2 or G3 Science.
Request an Online Secondary Chemistry Tutor
About Chemistry in the SEC
From 2027, Secondary students sit the Singapore-Cambridge Secondary Education Certificate (SEC), starting with the cohort that entered Sec 1 in 2024. G3 Chemistry (K324) has the same topics and papers as O-Level Chemistry (6092), which students sat until 2026.
- G3 Chemistry (K324)
- Pure Chemistry, examined in three papers
- Paper 1
- 40 multiple-choice questions in 1 hour (30%)
- Paper 2
- Structured and free-response questions, 80 marks in 1 h 45 min (50%). Section A ends with a data-based question of 8 to 12 marks; Section B is a choice of one question from two
- Paper 3
- Practical, 40 marks in 1 h 50 min (20%), with planning worth 15% of its marks
- In the exam room
- The Periodic Table is printed in Papers 1 and 2, and the Notes for Qualitative Analysis in Paper 3; an approved calculator is allowed in every paper
- G3 Science (K326 and K328)
- Chemistry has its own paper of 65 marks in 1 h 15 min (32.5%), plus a shared multiple-choice paper (20%) and practical test (15%)
- G2 Science (K223 and K225)
- A 20-mark multiple-choice paper and a 30-mark structured paper on Chemistry, sat together in 1 h 15 min, with no practical exam
SEAB warns that missing units or the wrong number of significant figures can be penalised, and it expects reactions to be described with their reagents and essential conditions.
Common Challenges Secondary Chemistry Students Face
Mole Calculations
Converting between masses, moles, gas volumes and concentrations, then using a balanced equation to find how much reacts.
Formulae and Ionic Equations
Building formulae from the charges on ions, then writing balanced and ionic equations with state symbols.
Qualitative Analysis
Matching each precipitate, colour change and gas test to the right cation, anion or gas, and knowing what a result rules out.
Redox and Electrolysis
Tracking electron transfer and oxidation states, then predicting what forms at each electrode.
Organic Chemistry and Polymers
Homologous series, cracking, esters, and addition and condensation polymers, each with its own reagents and conditions.
The Practical Paper
Titrations, rates experiments, salt preparation and tests on unknown substances, with planning worth 15% of the paper’s marks.
How Our Online Secondary Chemistry Tutors Help
One Method for Calculations
Mole calculations set out in the same steps every time, with units and significant figures checked before moving on.
Equations Written Out on Screen
The tutor builds formulae, ionic equations and half-equations on a shared whiteboard, one step at a time.
Qualitative Analysis Drills
Practice with the Notes for Qualitative Analysis until every test result points clearly to an ion or a gas.
Answers That Match the Command Word
What describe, explain, suggest and deduce each ask for, and how the marks shown decide the length of an answer.
Practical Paper Preparation
Planning, results tables, graphs and sources of error for Paper 3, alongside the experiments done in school.
Lessons for Your Child’s Course
G3 Chemistry, or the Chemistry in G3 or G2 Science, with practice on the papers your child will sit.
Secondary Chemistry Topics Covered by Our Tutors
G3 Chemistry's twelve topics in the syllabus's own words, under its three sections. The syllabus doesn't divide them into Sec 3 and Sec 4.
Section I: Matter – Structures and Properties
- Experimental chemistry: experimental design, and methods of purification and analysis
- The particulate nature of matter: kinetic particle theory and atomic structure
- Chemical bonding and structure: ionic, covalent and metallic bonding, and the structure and properties of materials
Section II: Chemical Reactions
- Chemical calculations: formulae and equation writing, and the mole concept and stoichiometry
- Acid-base chemistry: acids and bases, salts, and ammonia
- Qualitative analysis of aqueous cations, anions and gases
- Redox chemistry: oxidation and reduction, and electrochemistry
- Patterns in the Periodic Table: periodic trends, group properties, transition elements and the reactivity series
- Chemical energetics · rate of reactions
Section III: Chemistry in a Sustainable World
- Organic chemistry: fuels and crude oil, hydrocarbons, alcohols, carboxylic acids and esters, and polymers
- Maintaining air quality, from pollutants and catalytic converters to the carbon cycle and greenhouse gases
Chemistry in Combined Science
- G3 Science
- All twelve topics in less depth, without metallic bonding, ammonia, electrochemistry, transition elements, esters or condensation polymers
- G2 Science
- Nine of the twelve topics; redox chemistry, chemical energetics and rate of reactions are not included
Going On to JC Chemistry
H1 and H2 Chemistry assume knowledge of O-Level Chemistry, taken as a single subject or within a balanced science course, so these topics are the starting point for JC1.
Key Secondary Chemistry Dates
Updated
Upcoming dates from MOE and SEAB, and SEAB's pattern for the SEC. SEAB publishes each year's timetable.
- O-Level 2026 results
- 13 to 15 January 2027 (tentative)
- SEC practical exams
- Before the written papers
- SEC written papers
- One common exam period, starting in October
- SEC 2027 results
- January 2028
Why Choose onlinetuition.sg for Secondary Chemistry Tuition?
Tutors for Pure and Combined Chemistry
We match a tutor for G3 Chemistry or for the Chemistry in G3 or G2 Science.
Screened for Results and Experience
Every tutor is screened for their qualifications, Chemistry results and teaching experience.
Groups on the Same Course
Small groups have up to 4 students at the same level, all on the same Chemistry syllabus.
The Same Tutor Each Week
One tutor teaches your child every week, so each topic builds on the one before.
A Trial Lesson First
The first lesson is a trial, so you can see how your child gets on before deciding.
No Agency Fees
Requesting a Secondary Chemistry tutor is free, and there are no agency fees.
Frequently Asked Questions About Secondary Chemistry Tuition
Thinking of Secondary Chemistry Tuition?
Is G3 Chemistry the Same as O-Level Chemistry?
In topics and papers, yes. SEAB lists G3 Chemistry (K324) as the SEC course that follows O-Level Chemistry (6092), and the two syllabuses match apart from their names.
What Is the Difference Between Pure and Combined Chemistry?
Pure Chemistry is G3 Chemistry, a subject of its own with three papers. Combined Science pairs Chemistry with Physics or Biology in one subject, with less Chemistry content, examined alongside the other science.
Does G2 Science Include Chemistry?
Yes, in Science (Physics, Chemistry) and Science (Chemistry, Biology) at G2. Nine Chemistry topics are examined in a multiple-choice paper and a structured paper.
Why Do Students Find the Mole Concept Hard?
It combines several skills at once: balanced equations, ratios and changing units. A slip early in the working carries through to the final answer.
When Should My Child Start Secondary Chemistry Tuition?
Many families start in Sec 3, as bonding and the first calculations arrive. Others start in Sec 4 to prepare for the preliminary exams and the SEC.
Getting a Tutor
How Do I Request a Secondary Chemistry Tutor?
Use the free form above, or the full request form, which also asks whether your child takes Chemistry at G2 or G3. We'll reply on WhatsApp.
Who Are Your Chemistry Tutors?
Part-time and full-time tutors, current and former school teachers, and undergraduates. Each is screened for their qualifications, results and teaching experience.
How Soon Will We Hear Back?
We aim to reply on WhatsApp within one working day, and lessons start with a trial.
Lessons
How Are Secondary Chemistry Lessons Taught Online?
Live on Zoom with cameras on. The tutor writes equations and draws apparatus and structures on a shared screen or digital whiteboard, and your child can ask questions as they go.
Can the Tutor Help With School Practical Work?
Yes, with the written side of Paper 3: planning, recording results and explaining errors. Hands-on work stays in the school laboratory.
How Long Is Each Lesson?
Usually 1.5 or 2 hours, held at the same time every week.
Others
How Much Does Secondary Chemistry Tuition Cost?
Fees depend on your child's level and the class size. We confirm the fee with you on WhatsApp before the first lesson.
Are There Any Agency Fees?
No. Requesting a tutor is free too.
How Do We Pay, and How Much Notice Is Needed to Stop?
Payment is by PayNow. Please give one month's notice to stop, out of courtesy to the tutor's planning.
Sources
- SEAB: SEC G3 Chemistry syllabus (K324), 2027
- SEAB: SEC G3 Science syllabuses (K326, K327, K328), 2027
- SEAB: SEC G2 Science syllabuses (K223, K224, K225), 2027
- SEAB: SEC G3 syllabuses for school candidates, 2027 (with 2026 codes)
- SEAB: SEC G2 syllabuses for school candidates, 2027 (with 2026 codes)
- SEAB: O-Level Chemistry syllabus (6092), 2026
- SEAB: The Singapore-Cambridge Secondary Education Certificate (SEC), including its exam and results pattern
- MOE: National examinations dates (2026 O-Level results)
- MOE: Full Subject-Based Banding in secondary schools, from the 2024 Secondary 1 cohort