September 2020 · Paper 1

Pre-2025 Syllabus

Download the official question paper from the MATSEC website, attempt it first, then use this page to check your working.

Elements, compounds & mixtures · Atomic structure & Periodic Table · Air pollution

Q2 — Not included

This question tested content outside the current SEC 06 syllabus and has been intentionally excluded.

Solutions — solute, solvent, solution

Group 7 — Halogens · Oxidation & reduction

Gases in air · Quantitative chemistry — moles & calculations

Atomic structure & Periodic Table

Air pollution · Carbon allotropes

Preparation of salts

Rates of reaction

Q10

Hard & soft water

Q11

Preparation of gases (O₂, H₂, CO₂) · Reactivity series

Q12

Organic Chemistry · Alkanes · Alkenes & alkynes · Polymers