Class size
Maximum 4 students
Students are grouped by learning pace, not just by level — if no existing session matches your child’s pace, we open a new one.
Class registration for the 2027 school year is open.
Secondary Chemistry syllabus: Pure vs Combined
This guide compares the 2027 SEC syllabuses for standalone G3 Chemistry and Combined Science at G3 and G2. If your school materials use the former O-Level or N(A) names, check the subject code and examination year before choosing a syllabus.
Live online classes · Maximum 4 students · 1.5 hours weekly
Use topic headings as a map, then check learning outcomes
- Pure Chemistry: SEC G3 K324
- G3 Combined Science with Chemistry: K326 or K328
- G2 Combined Science with Chemistry: K223 or K225
- The same heading can cover different depth; the official learning outcomes are the final reference
2027 topic comparison: Pure, G3 Combined and G2 Combined
Verified on 5 October 2026. This table compares the named topic sections in K324, K326/K328 and K223/K225. “Included” means a topic heading is present, not that its learning outcomes are identical. G2 has nine Chemistry topic headings; Pure and G3 Combined each have twelve.
| Topic group | Pure G3 | Combined G3 | Combined G2 |
|---|---|---|---|
| Experimental chemistry; particles; bonding and structure | Included | Included | Included |
| Chemical calculations; acid-base chemistry; qualitative analysis | Included | Included | Included |
| Patterns in the Periodic Table | Included | Included | Included |
| Redox chemistry; chemical energetics; rate of reactions | Named topic sections | Named topic sections | Not separate topic sections |
| Organic chemistry; maintaining air quality | Included | Included | Included |
Pure Chemistry assessment: K324
All three papers are required. These figures describe the standalone G3 Chemistry subject. Combined Science candidates should use the assessment scheme for their complete science combination.
| Paper | Duration | Marks | Weighting |
|---|---|---|---|
| 1: Multiple Choice | 1 hour | 40 | 30% |
| 2: Structured and Free Response | 1 h 45 min | 80 | 50% |
| 3: Practical | 1 h 50 min | 40 | 20% |
How to use the comparison
Start with the school’s confirmed subject code. Read the outcomes beneath each topic heading and mark the ones that require practice. Do not assume that a Pure Chemistry worksheet fits a Combined Science course just because both chapters have the same title. Practical preparation also requires the school’s laboratory work alongside written and data questions.
Where students need support
Topic names look identical across courses
Pure and G3 Combined use the same twelve Chemistry topic headings. Their detailed learning outcomes differ, so a shared heading is not proof of identical coverage.
A shorter topic list is treated as a revision plan
A list tells students what exists, not what they understand. Recent answers help identify which concepts need attention.
A student studies a different examination year
Use the syllabus matching the exam year and subject code. This guide is specifically for the first SEC cohort in 2027.
What we work on in class
Find the correct subject code
Confirm the level and combination with the school, then use the matching SEAB document when organising notes.
Turn outcomes into practice questions
For each topic, check whether the student can explain, calculate or interpret what the syllabus asks them to do.
Use evidence to prioritise revision
Compare a recent response with the expected reasoning and practise the missing step in another question.
Your class
Lessons and practice, every week
Class registration for the 2027 school year is open.
Class format
Live online
Weekly duration
1.5 hours
Levels
Secondary 3–4
Between lessons
Subject practice on the DeepThink platform
Practice is included as part of the classes.
Registration
2027 school year
Open now. Request a trial class and we will message you to confirm the level and schedule.
Getting started
Start with the work your child is doing now
A recent school assignment gives the teacher a useful starting point.
Bring a recent piece of work
We look at the questions, the response and the feedback to identify what needs attention first.
Confirm the right class
We message each family to confirm the school programme, level for 2027 and a suitable lesson time.
Try a lesson
A trial class lets your child meet the teacher, take part and see how the lessons work.
Frequently asked questions
Clear answers for parents
How many students are in each class?
Four, at most. Students are grouped by learning pace, not just by year level, so each lesson moves at the speed of the students actually in it. When no session matches a child’s pace, we open a new one. In a class that size, every child answers questions, gets their working checked, and gets help the moment they need it.
Does Combined Science omit all the harder Chemistry topics?
No. G3 Combined shares the twelve topic headings used by Pure Chemistry, but the detailed outcomes differ. G2 uses a nine-topic Chemistry structure. Read the appropriate outcomes instead of assuming coverage from a course label.
Is this a full replacement for the SEAB syllabus?
No. This is a comparison and planning guide. The linked official documents contain the complete learning outcomes, assessment rules and practical requirements.
Is registration open for 2027?
Class registration for the 2027 school year is open. Request a trial class using the form. We will message you to confirm your child’s 2027 level and class details.
Is practice included?
Yes. Subject practice on the DeepThink platform is part of the classes, alongside the weekly live online lesson.
Ready to start?
Try a trial class and see how DeepThink works
Experience our teaching approach firsthand. No commitment required.
Class registration for the 2027 school year is open.