May 2021 · 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
Water properties
Q2 — Not included
This question tested content outside the current SEC 06 syllabus and has been intentionally excluded.
Q2 — Not included (outside current syllabus)
Hard & soft water
Energetics
Transition metals — Fe & Cu
Group 7 — Halogens
Q7 — Not included
This question tested content outside the current SEC 06 syllabus and has been intentionally excluded.
Q7 — Not included (outside current syllabus)
Titrations & standard solutions
Qualitative Analysis
Section B
Answer any TWO of the following four questions
Answer any TWO of the following four questions
Organic Chemistry · Alkenes & alkynes · Alkanes
Q11 — Not included
This question tested content outside the current SEC 06 syllabus and has been intentionally excluded.
Q11 — Not included (outside current syllabus)
Preparation of salts · Balancing equations · Net ionic equations
Equilibrium · Haber process · Quantitative chemistry — moles & calculations
Rates of reaction