Secondary 4 Chemistry resources with O Level-aligned lessons, quizzes, exam papers, cheatsheets, audio support, and parent guidance for Singapore students.

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Secondary 4

Secondary 4 Chemistry with lessons, quizzes, exam papers, cheatsheets, audio learning, and parent support for Singapore students.

Secondary Syllabus

Choose your next practice

Choose a quiz to practise a topic, or an exam-style paper for a longer revision session. Attempt the questions first, then use the answers to review your method and understanding.

These are original AI-generated practice materials, including sets informed by past-paper analysis. They are not official past examination papers or MOE-endorsed materials. Automated benchmark scores help flag issues; they do not replace educator review.

Practice quizzes with answers

Secondary 4 Combined Science Chemistry Acids Bases Salts QuizDeepSeek V4 Pro
Secondary 4 Combined Science Chemistry Acids Bases Salts QuizGemma 4 31B
Secondary 4 Combined Science Chemistry Acids Bases Salts QuizTencent HY3 Free
Secondary 4 Combined Science Chemistry Acids Bases Salts QuizClaude Sonnet 4
Secondary 4 Combined Science Chemistry Acids Bases Salts QuizLongCat 2.0 LLM
Secondary 4 Combined Science Chemistry Acids Bases Salts QuizQwen3.6 Plus
Secondary 4 Combined Science Chemistry Atomic Structure Bonding QuizDeepSeek V4 Pro
Secondary 4 Combined Science Chemistry Atomic Structure Bonding QuizGemma 4 31B
Secondary 4 Combined Science Chemistry Atomic Structure Bonding QuizTencent HY3 Free
Secondary 4 Combined Science Chemistry Atomic Structure Bonding QuizLongCat 2.0 LLM
Secondary 4 Combined Science Chemistry Atomic Structure Bonding QuizQwen3.6 Plus
Secondary 4 Combined Science Chemistry Organic Chemistry QuizDeepSeek V4 Pro
Secondary 4 Combined Science Chemistry Organic Chemistry QuizGemma 4 31B
Secondary 4 Combined Science Chemistry Organic Chemistry QuizTencent HY3 Free
Secondary 4 Combined Science Chemistry Organic Chemistry QuizLongCat 2.0 LLM
Secondary 4 Combined Science Chemistry Organic Chemistry QuizQwen3.6 Plus
Secondary 4 Combined Science Chemistry Periodic Table QuizDeepSeek V4 Pro
Secondary 4 Combined Science Chemistry Periodic Table QuizGemma 4 31B
Secondary 4 Combined Science Chemistry Periodic Table QuizTencent HY3 Free
Secondary 4 Combined Science Chemistry Periodic Table QuizLongCat 2.0 LLM
Secondary 4 Combined Science Chemistry Periodic Table QuizQwen3.6 Plus
Secondary 4 Combined Science Chemistry Redox Electrochemistry QuizDeepSeek V4 Pro
Secondary 4 Combined Science Chemistry Redox Electrochemistry QuizGemma 4 31B
Secondary 4 Combined Science Chemistry Redox Electrochemistry QuizTencent HY3 Free
Secondary 4 Combined Science Chemistry Redox Electrochemistry QuizLongCat 2.0 LLM
Secondary 4 Combined Science Chemistry Redox Electrochemistry QuizQwen3.6 Plus
Secondary 4 Combined Science Chemistry Stoichiometry Moles QuizDeepSeek V4 Pro
Secondary 4 Combined Science Chemistry Stoichiometry Moles QuizGemma 4 31B
Secondary 4 Combined Science Chemistry Stoichiometry Moles QuizTencent HY3 Free
Secondary 4 Combined Science Chemistry Stoichiometry Moles QuizLongCat 2.0 LLM
Secondary 4 Combined Science Chemistry Stoichiometry Moles QuizQwen3.6 Plus
Secondary 4 Pure Chemistry Acids Bases Salts QuizDeepSeek V4 Pro
Secondary 4 Pure Chemistry Acids Bases Salts QuizGemma 4 31B
Secondary 4 Pure Chemistry Acids Bases Salts QuizTencent HY3 Free
Secondary 4 Pure Chemistry Acids Bases Salts QuizClaude Sonnet 4
Secondary 4 Pure Chemistry Acids Bases Salts QuizNVIDIA Nemotron 3 Ultra 550B A55B Free
Secondary 4 Pure Chemistry Acids Bases Salts QuizLongCat 2.0 LLM
Secondary 4 Pure Chemistry Acids Bases Salts QuizQwen3.6 Plus
Secondary 4 Pure Chemistry Atomic Structure Bonding QuizDeepSeek V4 Pro
Secondary 4 Pure Chemistry Atomic Structure Bonding QuizGemma 4 31B
Secondary 4 Pure Chemistry Atomic Structure Bonding QuizTencent HY3 Free
Secondary 4 Pure Chemistry Atomic Structure Bonding QuizNVIDIA Nemotron 3 Ultra 550B A55B Free
Secondary 4 Pure Chemistry Atomic Structure Bonding QuizLongCat 2.0 LLM
Secondary 4 Pure Chemistry Atomic Structure Bonding QuizQwen3.6 Plus
Secondary 4 Pure Chemistry Organic Chemistry QuizDeepSeek V4 Pro
Secondary 4 Pure Chemistry Organic Chemistry QuizGemma 4 31B
Secondary 4 Pure Chemistry Organic Chemistry QuizTencent HY3 Free
Secondary 4 Pure Chemistry Organic Chemistry QuizNVIDIA Nemotron 3 Ultra 550B A55B Free
Secondary 4 Pure Chemistry Organic Chemistry QuizLongCat 2.0 LLM
Secondary 4 Pure Chemistry Organic Chemistry QuizQwen3.6 Plus
Secondary 4 Pure Chemistry Periodic Table QuizDeepSeek V4 Pro
Secondary 4 Pure Chemistry Periodic Table QuizGemma 4 31B
Secondary 4 Pure Chemistry Periodic Table QuizTencent HY3 Free
Secondary 4 Pure Chemistry Periodic Table QuizNVIDIA Nemotron 3 Ultra 550B A55B Free
Secondary 4 Pure Chemistry Periodic Table QuizLongCat 2.0 LLM
Secondary 4 Pure Chemistry Periodic Table QuizQwen3.6 Plus
Secondary 4 Pure Chemistry Redox Electrochemistry QuizDeepSeek V4 Pro
Secondary 4 Pure Chemistry Redox Electrochemistry QuizGemma 4 31B
Secondary 4 Pure Chemistry Redox Electrochemistry QuizTencent HY3 Free
Secondary 4 Pure Chemistry Redox Electrochemistry QuizNVIDIA Nemotron 3 Ultra 550B A55B Free
Secondary 4 Pure Chemistry Redox Electrochemistry QuizLongCat 2.0 LLM
Secondary 4 Pure Chemistry Redox Electrochemistry QuizQwen3.6 Plus
Secondary 4 Pure Chemistry Stoichiometry Moles QuizDeepSeek V4 Pro
Secondary 4 Pure Chemistry Stoichiometry Moles QuizGemma 4 31B
Secondary 4 Pure Chemistry Stoichiometry Moles QuizTencent HY3 Free
Secondary 4 Pure Chemistry Stoichiometry Moles QuizLongCat 2.0 LLM
Secondary 4 Pure Chemistry Stoichiometry Moles QuizQwen3.6 Plus
Secondary 4 Combined Science Chemistry Acids Bases Salts QuizClaude Sonnet 4
Secondary 4 Combined Science Chemistry Acids Bases Salts QuizDeepSeek V4 Pro
Secondary 4 Combined Science Chemistry Acids Bases Salts QuizGemma 4 31B
Secondary 4 Combined Science Chemistry Acids Bases Salts QuizHy3 Free
Secondary 4 Combined Science Chemistry Acids Bases Salts QuizQwen3.6 Plus
Secondary 4 Combined Science Chemistry Atomic Structure Bonding QuizDeepSeek V4 Pro
Secondary 4 Combined Science Chemistry Atomic Structure Bonding QuizGemma 4 31B
Secondary 4 Combined Science Chemistry Atomic Structure Bonding QuizHy3 Free
Secondary 4 Combined Science Chemistry Atomic Structure Bonding QuizLongCat 2.0 LLM
Secondary 4 Combined Science Chemistry Atomic Structure Bonding QuizQwen3.6 Plus
Secondary 4 Combined Science Chemistry Organic Chemistry QuizDeepSeek V4 Pro
Secondary 4 Combined Science Chemistry Organic Chemistry QuizGemma 4 31B
Secondary 4 Combined Science Chemistry Organic Chemistry QuizHy3 Free
Secondary 4 Combined Science Chemistry Organic Chemistry QuizLongCat 2.0 LLM
Secondary 4 Combined Science Chemistry Organic Chemistry QuizQwen3.6 Plus
Secondary 4 Combined Science Chemistry Periodic Table QuizDeepSeek V4 Pro
Secondary 4 Combined Science Chemistry Periodic Table QuizGemma 4 31B
Secondary 4 Combined Science Chemistry Periodic Table QuizHy3 Free
Secondary 4 Combined Science Chemistry Periodic Table QuizLongCat 2.0 LLM
Secondary 4 Combined Science Chemistry Periodic Table QuizQwen3.6 Plus
Secondary 4 Combined Science Chemistry Redox Electrochemistry QuizDeepSeek V4 Pro
Secondary 4 Combined Science Chemistry Redox Electrochemistry QuizGemma 4 31B
Secondary 4 Combined Science Chemistry Redox Electrochemistry QuizHy3 Free
Secondary 4 Combined Science Chemistry Redox Electrochemistry QuizLongCat 2.0 LLM
Secondary 4 Combined Science Chemistry Redox Electrochemistry QuizQwen3.6 Plus
Secondary 4 Combined Science Chemistry Stoichiometry Moles QuizDeepSeek V4 Pro
Secondary 4 Combined Science Chemistry Stoichiometry Moles QuizGemma 4 31B
Secondary 4 Combined Science Chemistry Stoichiometry Moles QuizHy3 Free
Secondary 4 Combined Science Chemistry Stoichiometry Moles QuizQwen3.6 Plus
Secondary 4 Pure Chemistry Acids Bases Salts QuizClaude Sonnet 4
Secondary 4 Pure Chemistry Acids Bases Salts QuizDeepSeek V4 Pro
Secondary 4 Pure Chemistry Acids Bases Salts QuizGemma 4 31B
Secondary 4 Pure Chemistry Acids Bases Salts QuizHy3 Free
Secondary 4 Pure Chemistry Acids Bases Salts QuizNVIDIA Nemotron 3 Ultra 550B A55B Free
Secondary 4 Pure Chemistry Acids Bases Salts QuizLongCat 2.0 LLM
Secondary 4 Pure Chemistry Acids Bases Salts QuizQwen3.6 Plus
Secondary 4 Pure Chemistry Atomic Structure Bonding QuizDeepSeek V4 Pro
Secondary 4 Pure Chemistry Atomic Structure Bonding QuizGemma 4 31B
Secondary 4 Pure Chemistry Atomic Structure Bonding QuizHy3 Free
Secondary 4 Pure Chemistry Atomic Structure Bonding QuizLongCat 2.0 LLM
Secondary 4 Pure Chemistry Atomic Structure Bonding QuizQwen3.6 Plus
Secondary 4 Pure Chemistry Organic Chemistry QuizDeepSeek V4 Pro
Secondary 4 Pure Chemistry Organic Chemistry QuizGemma 4 31B
Secondary 4 Pure Chemistry Organic Chemistry QuizHy3 Free
Secondary 4 Pure Chemistry Organic Chemistry QuizLongCat 2.0 LLM
Secondary 4 Pure Chemistry Organic Chemistry QuizQwen3.6 Plus
Secondary 4 Pure Chemistry Periodic Table QuizDeepSeek V4 Pro
Secondary 4 Pure Chemistry Periodic Table QuizGemma 4 31B
Secondary 4 Pure Chemistry Periodic Table QuizHy3 Free
Secondary 4 Pure Chemistry Periodic Table QuizLongCat 2.0 LLM
Secondary 4 Pure Chemistry Periodic Table QuizQwen3.6 Plus
Secondary 4 Pure Chemistry Redox Electrochemistry QuizDeepSeek V4 Pro
Secondary 4 Pure Chemistry Redox Electrochemistry QuizGemma 4 31B
Secondary 4 Pure Chemistry Redox Electrochemistry QuizHy3 Free
Secondary 4 Pure Chemistry Redox Electrochemistry QuizLongCat 2.0 LLM
Secondary 4 Pure Chemistry Redox Electrochemistry QuizQwen3.6 Plus
Secondary 4 Pure Chemistry Stoichiometry Moles QuizDeepSeek V4 Pro
Secondary 4 Pure Chemistry Stoichiometry Moles QuizGemma 4 31B
Secondary 4 Pure Chemistry Stoichiometry Moles QuizHy3 Free
Secondary 4 Pure Chemistry Stoichiometry Moles QuizLongCat 2.0 LLM
Secondary 4 Pure Chemistry Stoichiometry Moles QuizQwen3.6 Plus

Practice exam papers with answers

Secondary 4 Combined Science Chemistry Preliminary Examination Paper 1DeepSeek V4 Pro
Secondary 4 Combined Science Chemistry Preliminary Examination Paper 1Gemma 4 31B
Secondary 4 Combined Science Chemistry Preliminary Examination Paper 1Tencent HY3 Free
Secondary 4 Combined Science Chemistry Preliminary Examination Paper 1Claude Sonnet 4
Secondary 4 Combined Science Chemistry Preliminary Examination Paper 1LongCat 2.0 LLM
Secondary 4 Combined Science Chemistry Preliminary Examination Paper 1Qwen3.6 Plus
Secondary 4 Combined Science Chemistry Preliminary Examination Paper 2DeepSeek V4 Pro
Secondary 4 Combined Science Chemistry Preliminary Examination Paper 2Gemma 4 31B
Secondary 4 Combined Science Chemistry Preliminary Examination Paper 2Tencent HY3 Free
Secondary 4 Combined Science Chemistry Preliminary Examination Paper 2LongCat 2.0 LLM
Secondary 4 Combined Science Chemistry Preliminary Examination Paper 2Qwen3.6 Plus
Secondary 4 Combined Science Chemistry Preliminary Examination Paper 3DeepSeek V4 Pro
Secondary 4 Combined Science Chemistry Preliminary Examination Paper 3Gemma 4 31B
Secondary 4 Combined Science Chemistry Preliminary Examination Paper 3Tencent HY3 Free
Secondary 4 Combined Science Chemistry Preliminary Examination Paper 3LongCat 2.0 LLM
Secondary 4 Combined Science Chemistry Preliminary Examination Paper 3Qwen3.6 Plus
Secondary 4 Combined Science Chemistry Preliminary Examination Paper 4DeepSeek V4 Pro
Secondary 4 Combined Science Chemistry Preliminary Examination Paper 4Gemma 4 31B
Secondary 4 Combined Science Chemistry Preliminary Examination Paper 4Tencent HY3 Free
Secondary 4 Combined Science Chemistry Preliminary Examination Paper 4LongCat 2.0 LLM
Secondary 4 Combined Science Chemistry Preliminary Examination Paper 4Qwen3.6 Plus
Secondary 4 Combined Science Chemistry Preliminary Examination Paper 5DeepSeek V4 Pro
Secondary 4 Combined Science Chemistry Preliminary Examination Paper 5Gemma 4 31B
Secondary 4 Combined Science Chemistry Preliminary Examination Paper 5Tencent HY3 Free
Secondary 4 Combined Science Chemistry Preliminary Examination Paper 5LongCat 2.0 LLM
Secondary 4 Combined Science Chemistry Preliminary Examination Paper 5Qwen3.6 Plus
Secondary 4 Pure Chemistry Preliminary Examination Paper 1DeepSeek V4 Pro
Secondary 4 Pure Chemistry Preliminary Examination Paper 1Gemma 4 31B
Secondary 4 Pure Chemistry Preliminary Examination Paper 1Tencent HY3 Free
Secondary 4 Pure Chemistry Preliminary Examination Paper 1Claude Sonnet 4
Secondary 4 Pure Chemistry Preliminary Examination Paper 1NVIDIA Nemotron 3 Ultra 550B A55B Free
Secondary 4 Pure Chemistry Preliminary Examination Paper 1LongCat 2.0 LLM
Secondary 4 Pure Chemistry Preliminary Examination Paper 1Qwen3.6 Plus
Secondary 4 Pure Chemistry Preliminary Examination Paper 2DeepSeek V4 Pro
Secondary 4 Pure Chemistry Preliminary Examination Paper 2Gemma 4 31B
Secondary 4 Pure Chemistry Preliminary Examination Paper 2Tencent HY3 Free
Secondary 4 Pure Chemistry Preliminary Examination Paper 2LongCat 2.0 LLM
Secondary 4 Pure Chemistry Preliminary Examination Paper 2Qwen3.6 Plus
Secondary 4 Pure Chemistry Preliminary Examination Paper 3DeepSeek V4 Pro
Secondary 4 Pure Chemistry Preliminary Examination Paper 3Gemma 4 31B
Secondary 4 Pure Chemistry Preliminary Examination Paper 3Tencent HY3 Free
Secondary 4 Pure Chemistry Preliminary Examination Paper 3NVIDIA Nemotron 3 Ultra 550B A55B Free
Secondary 4 Pure Chemistry Preliminary Examination Paper 3LongCat 2.0 LLM
Secondary 4 Pure Chemistry Preliminary Examination Paper 3Qwen3.6 Plus
Secondary 4 Pure Chemistry Preliminary Examination Paper 4DeepSeek V4 Pro
Secondary 4 Pure Chemistry Preliminary Examination Paper 4Gemma 4 31B
Secondary 4 Pure Chemistry Preliminary Examination Paper 4Tencent HY3 Free
Secondary 4 Pure Chemistry Preliminary Examination Paper 4NVIDIA Nemotron 3 Ultra 550B A55B Free
Secondary 4 Pure Chemistry Preliminary Examination Paper 4LongCat 2.0 LLM
Secondary 4 Pure Chemistry Preliminary Examination Paper 4Qwen3.6 Plus
Secondary 4 Pure Chemistry Preliminary Examination Paper 5DeepSeek V4 Pro
Secondary 4 Pure Chemistry Preliminary Examination Paper 5Gemma 4 31B
Secondary 4 Pure Chemistry Preliminary Examination Paper 5Tencent HY3 Free
Secondary 4 Pure Chemistry Preliminary Examination Paper 5LongCat 2.0 LLM
Secondary 4 Pure Chemistry Preliminary Examination Paper 5Qwen3.6 Plus
Secondary 4 Combined Science Chemistry Practice Paper 1DeepSeek V4 Pro
Secondary 4 Combined Science Chemistry Practice Paper 1Gemma 4 31B
Secondary 4 Combined Science Chemistry Practice Paper 1Tencent HY3 Free
Secondary 4 Combined Science Chemistry Practice Paper 1Claude Sonnet 4
Secondary 4 Combined Science Chemistry Practice Paper 1LongCat 2.0 LLM
Secondary 4 Combined Science Chemistry Practice Paper 1Qwen3.6 Plus
Secondary 4 Combined Science Chemistry Practice Paper 2DeepSeek V4 Pro
Secondary 4 Combined Science Chemistry Practice Paper 2Gemma 4 31B
Secondary 4 Combined Science Chemistry Practice Paper 2Tencent HY3 Free
Secondary 4 Combined Science Chemistry Practice Paper 2LongCat 2.0 LLM
Secondary 4 Combined Science Chemistry Practice Paper 2Qwen3.6 Plus
Secondary 4 Combined Science Chemistry Practice Paper 3DeepSeek V4 Pro
Secondary 4 Combined Science Chemistry Practice Paper 3Gemma 4 31B
Secondary 4 Combined Science Chemistry Practice Paper 3Tencent HY3 Free
Secondary 4 Combined Science Chemistry Practice Paper 3LongCat 2.0 LLM
Secondary 4 Combined Science Chemistry Practice Paper 3Qwen3.6 Plus
Secondary 4 Combined Science Chemistry Practice Paper 4DeepSeek V4 Pro
Secondary 4 Combined Science Chemistry Practice Paper 4Gemma 4 31B
Secondary 4 Combined Science Chemistry Practice Paper 4Tencent HY3 Free
Secondary 4 Combined Science Chemistry Practice Paper 4LongCat 2.0 LLM
Secondary 4 Combined Science Chemistry Practice Paper 4Qwen3.6 Plus
Secondary 4 Combined Science Chemistry Practice Paper 5DeepSeek V4 Pro
Secondary 4 Combined Science Chemistry Practice Paper 5Gemma 4 31B
Secondary 4 Combined Science Chemistry Practice Paper 5Tencent HY3 Free
Secondary 4 Combined Science Chemistry Practice Paper 5LongCat 2.0 LLM
Secondary 4 Combined Science Chemistry Practice Paper 5Qwen3.6 Plus
Secondary 4 Pure Chemistry Practice Paper 1DeepSeek V4 Pro
Secondary 4 Pure Chemistry Practice Paper 1Gemma 4 31B
Secondary 4 Pure Chemistry Practice Paper 1Tencent HY3 Free
Secondary 4 Pure Chemistry Practice Paper 1Claude Sonnet 4
Secondary 4 Pure Chemistry Practice Paper 1LongCat 2.0 LLM
Secondary 4 Pure Chemistry Practice Paper 1Qwen3.6 Plus
Secondary 4 Pure Chemistry Practice Paper 2DeepSeek V4 Pro
Secondary 4 Pure Chemistry Practice Paper 2Gemma 4 31B
Secondary 4 Pure Chemistry Practice Paper 2Tencent HY3 Free
Secondary 4 Pure Chemistry Practice Paper 2LongCat 2.0 LLM
Secondary 4 Pure Chemistry Practice Paper 2Qwen3.6 Plus
Secondary 4 Pure Chemistry Practice Paper 3DeepSeek V4 Pro
Secondary 4 Pure Chemistry Practice Paper 3Gemma 4 31B
Secondary 4 Pure Chemistry Practice Paper 3Tencent HY3 Free
Secondary 4 Pure Chemistry Practice Paper 3LongCat 2.0 LLM
Secondary 4 Pure Chemistry Practice Paper 3Qwen3.6 Plus
Secondary 4 Pure Chemistry Practice Paper 4DeepSeek V4 Pro
Secondary 4 Pure Chemistry Practice Paper 4Gemma 4 31B
Secondary 4 Pure Chemistry Practice Paper 4Tencent HY3 Free
Secondary 4 Pure Chemistry Practice Paper 4LongCat 2.0 LLM
Secondary 4 Pure Chemistry Practice Paper 4Qwen3.6 Plus
Secondary 4 Pure Chemistry Practice Paper 5DeepSeek V4 Pro
Secondary 4 Pure Chemistry Practice Paper 5Gemma 4 31B
Secondary 4 Pure Chemistry Practice Paper 5Tencent HY3 Free
Secondary 4 Pure Chemistry Practice Paper 5LongCat 2.0 LLM
Secondary 4 Pure Chemistry Practice Paper 5Qwen3.6 Plus