September 2020 · Paper 2A
Pre-2025 SyllabusDownload the official question paper from the MATSEC website, attempt it first, then use this page to check your working.
This paper included a Section B choice element — answer any 2 of 4 questions worth 20 marks each. The current syllabus (2025+) no longer includes this.
Section A
States of matter · Gas diffusion & density
Relative atomic mass from isotopes · Atomic structure & Periodic Table
Separation techniques
Covalent bonding
Equilibrium
Electrolysis of aqueous solutions
Organic Chemistry · Alcohols · Carboxylic acids & esters
Titrations & standard solutions
Extraction of iron (blast furnace)
Section B
Answer any TWO of the following four questions
Answer any TWO of the following four questions
Qualitative Analysis · Net ionic equations
Organic Chemistry · Air pollution · CFCs & ozone
Haber process · Reactions of acids · Quantitative chemistry — moles & calculations
Energetics
Q14 — Not included
This question tested content outside the current SEC 06 syllabus and has been intentionally excluded.
Q14 — Not included (outside current syllabus)