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2021 路 Sec 3 路 Combined Chemistry 路 End-of-Year Exam

Pasir Ris 2021 Sec 3 Combined Chemistry End-of-Year Exam

The 2021 Sec 3 Combined Science (Chemistry) end-of-year exam set by Pasir Ris Secondary School, 70 marks over 15 pages, with the answers as a separate file. Free to download for revision.

This paper was set by Pasir Ris Secondary School. All rights in it belong to the school.

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  • Answers as a separate PDF, 6 pages (the school's own key)
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About this paper

SchoolPasir Ris Secondary School
Year and level2021, Secondary 3
SubjectCombined Science (Chemistry)
PaperEnd-of-Year Exam (cover: Pasir Ris Secondary School Secondary 3 Express End of Year Examination 2021 Science (Chemistry) Paper 1 Multiple Choice, Paper 2 Chemistry)
Total marks70
Question pages15
Answers6 pages: the school's own answer key, scanned

Parts of the paper

PartQuestionsMarksTimeCalculator
Paper 1101015 min (advised)Yes
Paper 2 Section AYes
Paper 2 Section BYes

How it fits today's syllabus

This paper was set in 2021 for the GCE O-Level. The final O-Level sitting is in October and November 2026. From 2027 Sec 4 students sit the Singapore-Cambridge Secondary Education Certificate (SEC), and MOE treats an O-Level grade as equivalent to G3. Syllabuses change over time, so check an older paper against the current syllabus. See the O-Level periodic table for what to know now.

Topics in this paper

  • Kinetic particle theory
  • Methods of purification and analysis
  • Atomic structure
  • Chemical bonding
  • The Periodic Table
  • Mole concept
  • Acids and bases
  • Salts
  • Redox

First pages

  1. Pasir Ris 2021 Sec 3 Combined Chemistry End-of-Year Exam, page 1Page 1
  2. Pasir Ris 2021 Sec 3 Combined Chemistry End-of-Year Exam, page 2Page 2

Get the full paper free15 pages, answers included

Questions about this paper

How many marks is the Pasir Ris 2021 Sec 3 Combined Chemistry EOY paper?

70 marks over 15 pages. Paper 1 has 10 questions for 10 marks.

Does the Pasir Ris 2021 Sec 3 Combined Chemistry EOY paper come with answers?

Yes. The answers are a separate 6-page PDF: the school's own answer key, scanned. Try the paper first, then mark it.

Is this paper still good practice in 2027?

This paper was set in 2021 for the GCE O-Level. The final O-Level sitting is in October and November 2026. From 2027 Sec 4 students sit the Singapore-Cambridge Secondary Education Certificate (SEC), and MOE treats an O-Level grade as equivalent to G3. Syllabuses change over time, so check an older paper against the current syllabus.

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