O-Level Combined Chemistry notes and past-year papers
The Holy Grail library holds 144 O-Level Combined Chemistry documents, free to download without an account.
They include 86 Notes/Practices, 51 Exam Papers and 7 User Mock Papers, with years from 0 to 2025. Every document below has its own page with a text preview and a download link.
2025
36 documents- 2025 4E Dunman Sec ScChem P3_2025 MSExam Papers
- 2025 4E Dunman Sec ScChem P3_2025 QPExam Papers
- 2025 AES 5086 5088 Sc(Chem) Prelim P1 P3 MSExam Papers
- 2025 AES 5086 5088 Sc(Chem) Prelim P1 QPExam Papers
- 2025 AES 5086 5088 Sc(Chem) Prelim P3Exam Papers
- 2025 AMKSS EOY 3E SCI CHEM P1Exam Papers
- 2025 AMKSS EOY 3E SCI CHEM P1 P3 MSExam Papers
- 2025 AMKSS EOY 3E SCI CHEM P3Exam Papers
- 2025 TKGS Sec 4 Sci (Chem) Prelim Paper 1Exam Papers
- 2025 TKGS Sec 4 Sci (Chem) Prelim Paper 1 - AnswersExam Papers
- 2025 YTSS Prelim 4E5N G3 Sc(Chem) P1Exam Papers
- 2025 ZHSS Sc(Chem) Prelim P1 (with MS)Exam Papers
- ADSS Prelim Sc Chem P3 QP (2025)Exam Papers
- Answer Key for MOCK PAPER 1 (finalized)User Mock Papers
- C10: Oxidation and Reduction (5088 COMBINED CHEMISTRY)Notes/Practices
- C12: The Reactivity Series (5088 COMBINED CHEMISTRY)Notes/Practices
- C13: Chemical Energetics (5088 COMBINED CHEMISTRY)Notes/Practices
- C7-C10 Chem Mock Paper - MCQUser Mock Papers
- C8: Acids and Bases (5088 COMBINED CHEMISTRY)Notes/Practices
- Chapter 2 Kinetic Particle Theory NotesNotes/Practices
- Chapter 7 (Mole Concepts and Stoichiometry) User Mock Papers
- Chapter 9 Notes (Chemistry)Notes/Practices
- CHIJ 2025 Sec 4E5N Prelim Sc(Chem) P1 (final)Exam Papers
- CHIJ 2025 Sec 4E5N Prelim Sc(Chem) P1 & P3 MS Exam Papers
- Combined ChemistryNotes/Practices
- combined sci (chem) practical notesNotes/Practices
- dojo study club comb chem wa2 revision guideNotes/Practices
- MOCK PAPER 1User Mock Papers
- Organic chemistry combined chem notesNotes/Practices
- Organic Chemistry prac qns User Mock Papers
- Organic Chemistry Prac Qns_ ANSUser Mock Papers
- PRSS Sc(Chem) Paper 1/3 AKExam Papers
- PRSS Sc(Chem) Paper 3 QPExam Papers
- sci(chem) definition listNotes/Practices
- YTSS Sc(Chem) Prelim P3 MSExam Papers
- YTSS Sc(Chem) Prelim P3 QPExam Papers
2024
18 documents- 2024_CCKSS_4E_Prelim_SciCH_MSExam Papers
- 2024_CCKSS_4E_Prelim_SciCH_P1Exam Papers
- 2024_CCKSS_4E_Prelim_SciCH_P3Exam Papers
- 5078 Chem Compiled Notes 2024Notes/Practices
- ACSBR Air (Extensions) - TutorialNotes/Practices
- ACSBR Air - TutorialNotes/Practices
- CHIJ_2024 Sec 4E5N Prelim Sc(Chem) P1Exam Papers
- CHIJ_2024 Sec 4E5N Prelim Sc(Chem) P3Exam Papers
- CHS Chemistry (Alkanes, Alkenes and Isomerism)Notes/Practices
- Common answering techniques (Combined Chemistry)Notes/Practices
- Energy Changes (5076/5078 syllabus)Notes/Practices
- NASS Sc(Chem) PrelimExam Papers
- [note][sru] Diversity 1.3 Covalent Bonding 2024Notes/Practices
- [note][tr] Diversity 1.1 Ionic Bonding 2024 [modofied for 2025 9 july 2024]Notes/Practices
- Redox Practice PaperUser Mock Papers
- Speed of reaction, QA, Chemical enegetics, Metals (combine chem)Notes/Practices
- SSS Sc(Chem) PrelimExam Papers
- YCKSS Sc(Chem) PrelimExam Papers
2023
6 documents- 5078 chem Compiled Notes Notes/Practices
- Atomic StructureNotes/Practices
- Haber Process Mind MapNotes/Practices
- Mole ConceptNotes/Practices
- O levels Science Chemistry Practical SummaryNotes/Practices
- sec 3 chemNotes/Practices
2022
15 documents- 2022 NTSS Chemistry P1Exam Papers
- 2022 NTSS Chemistry P1 (Answers)Exam Papers
- 2022 NTSS Chemistry P3Exam Papers
- 2022 NTSS Chemistry P3 (Answers)Exam Papers
- 2022 Peirce Chemistry AnswersExam Papers
- 2022 Peirce Chemistry P1Exam Papers
- 2022 Peirce Chemistry P3Exam Papers
- 2022 Presbyterian High Chemistry P1Exam Papers
- 2022 Presbyterian High Chemistry P1 (Answers)Exam Papers
- 2022 Presbyterian High Chemistry P3Exam Papers
- 2022 Presbyterian High Chemistry P3 (Answers)Exam Papers
- 2022 Punggol Sec Chemistry AnswersExam Papers
- 2022 Punggol Sec Chemistry P1Exam Papers
- 2022 Punggol Sec Chemistry P3Exam Papers
- Compassvale-Secondary-Combined-Chemistry-Prelim-2022Exam Papers
2021
8 documents- 2021 Sec 3 Science Chemistry EOY Bedok South Secondary with AnswerExam Papers
- 2021 Sec 3 Science Chemistry EOY Chua Chu Kang Secondary with AnswerExam Papers
- 2021 Sec 3 Science Chemistry EOY Deyi Secondary with AnswerExam Papers
- 2021 Sec 3 Science Chemistry EOY Deyi Secondary with Answer (1)Exam Papers
- 2021 Sec 3 Science Chemistry EOY Springfield Secondary with AnswerExam Papers
- 2021 Sec 3 Science Chemistry EOY Springfield Secondary with AnswerExam Papers
- Pasir-Ris-Secondary-Sec-3-Science-Chemistry-EOY-2021Exam Papers
- Springfield-Secondary-Sec-3-Science-Chemistry-EOY-2021Exam Papers
2019
1 documents- CHS Kinetic Particle TheoryNotes/Practices
2017
1 documents2011
48 documents- 20A Molecular Structures - Assignment Answer KeyNotes/Practices
- ACSBR 11 Reduction and Oxidation - TutorialNotes/Practices
- ACSBR 12E Metals (Extensions) - TutorialNotes/Practices
- ACSBR 14 Ammonia & Sulfur Dioxide - TutorialNotes/Practices
- ACSBR 15 Speed of Reaction - TutorialNotes/Practices
- ACSBR 16 Electrolysis - AssignmentNotes/Practices
- ACSBR 16 Electrolysis - Assignment ANSNotes/Practices
- ACSBR 17 Electric Cell - AssignmentNotes/Practices
- ACSBR 17 Electric Cell - Assignment ANSNotes/Practices
- ACSBR 18E Energy Changes (Extensions) - AssignmentNotes/Practices
- ACSBR 18E Energy Changes (Extensions) - Assignment ANSNotes/Practices
- ACSBR 18 Energy Changes - AssignmentNotes/Practices
- ACSBR 18 Energy Changes - Assignment ANSNotes/Practices
- ACSBR 1 Atomic Structure - AssignmentNotes/Practices
- ACSBR 1 Atomic Structure - Assignment ANSNotes/Practices
- ACSBR 20B Molecular Structures (Extensions) - AssignmentNotes/Practices
- ACSBR 20B Molecular Structures (Extensions) - Assignment ANSNotes/Practices
- ACSBR 20C Alkanes Alkenes - AssignmentNotes/Practices
- ACSBR 20E Alcohols Acids - AssignmentNotes/Practices
- ACSBR 20F Alcohols Acids (Extensions) - AssignmentNotes/Practices
- ACSBR 2 Chemical Bonding - AssignmentNotes/Practices
- ACSBR 2 Chemical Bonding - Assignment ANSNotes/Practices
- ACSBR 2E Chemical Bonding (Extensions) - AssignmentNotes/Practices
- ACSBR 2E Chemical Bonding (Extensions) - Assignment ANSNotes/Practices
- ACSBR 3 Chemical Equations - AssignmentNotes/Practices
- ACSBR 3 Chemical Equations - Assignment ANSNotes/Practices
- ACSBR 3 Chemical Equations - Lesson PackageNotes/Practices
- ACSBR 5 Salts - AssignmentNotes/Practices
- ACSBR 5 Salts - Assignment ANSNotes/Practices
- ACSBR 5 Salts - Lesson PackageNotes/Practices
- ACSBR 6 Identification of Ions and Gases - AssignmentNotes/Practices
- ACSBR 6 Identification of Ions and Gases - Assignment ANSNotes/Practices
- ACSBR 7 Chemical Calculations - AssignmentNotes/Practices
- ACSBR 7 Chemical Calculations - Assignment ANS Notes/Practices
- ACSBR 7 Chemical Calculations - Lesson PackageNotes/Practices
- ACSBR 7E Chemical Calculations (Extensions) - AssignmentNotes/Practices
- ACSBR 7E Chemical Calculations (Extensions) - Assignment ANSNotes/Practices
- ACSBR 8 Kinetic Particle Theory - Lesson PackageNotes/Practices
- ACSBR 9 Methods of Separation - Lesson PackageNotes/Practices
- ACSBR Acids and Bases - AssignmentNotes/Practices
- ACSBR Addition Polymerisation - Lesson PackageNotes/Practices
- ACSBR Fuels & Crude Oil - AssignmentNotes/Practices
- ACSBR Identification of Ions & Gases - Lesson PackageNotes/Practices
- ACSBR Kinetic Particle Theory - Lesson PackageNotes/Practices
- ACSBR Metals Tutorial NotesNotes/Practices
- ACSBR Molecular Structures - AssignmentNotes/Practices
- ACSBR Periodic Table Tutorial NotesNotes/Practices
- ACSBR Salts - Lesson PackageNotes/Practices
0
11 documents- Chapter 9 SaltsNotes/Practices
- chemistry notes Notes/Practices
- Chemistry - things to memoriseNotes/Practices
- chem notesNotes/Practices
- chem practical notesNotes/Practices
- Mole Concepts Notes/Practices
- queenstown sec combined chemistry summary notesNotes/Practices
- redoxNotes/Practices
- testing for anions Notes/Practices
- testing for cationsNotes/Practices
- testing for gases Notes/Practices
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