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About the channel
Chemistry made clear — one concept at a time. Clear, step-by-step Chemistry lessons for Singapore H2 / A-Level and O-Level students. I explain difficult concepts, correct common misconceptions, and show the reasoning behind equations, structures, calculations and mechanisms. The goal is not simply to memorise Chemistry, but to understand why it works. On this channel, you’ll find: • A-Level and O-Level Chemistry explanations • Short, focused concept lessons • Exam-style MCQs and worked questions • Organic, Physical and Inorganic Chemistry • Common mistakes and misconceptions explained clearly I’m David Tan, a Singapore-based Chemistry tutor and published author. I break each topic down to its essential idea before gradually building towards the full explanation and exam-level application. For tuition enquiries, Chemistry books and free learning resources, explore the links below.
Latest videos
How to Predict Products of Aqueous Electrolysis | O-Level Chemistry
20 views · 07/24/2026
Electrolysis of Aqueous Sodium Chloride | Competition for Discharge Explained
39 views · 07/23/2026
Electrolysis of Molten Lead(II) Bromide | Half-Equations Explained
39 views · 07/22/2026
Anode vs Cathode in Electrolysis | Oxidation and Reduction Explained
148 views · 07/21/2026
What Is Electrolysis? | Ions, Electrons, Anode and Cathode Explained
101 views · 07/20/2026
Giant Covalent Structures Explained | Diamond, Graphite and Silicon Dioxide
21 views · 07/19/2026
Latest Shorts
Why Does Melting Point Drop from Si to P? | Periodic Trends | A-Level Chemistry
29 views · 06/19/2026
What Must a Drying Agent NOT Do? | Practical Chemistry | O-Level Chemistry
24 views · 06/10/2026
What Causes Splitting in Proton NMR? | Proton NMR | A-Level Chemistry
26 views · 06/10/2026
What Does a Drying Agent Remove? | Practical Chemistry | O-Level Chemistry
33 views · 06/09/2026
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