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Chemical Changes and Reactions
Chemistry (Science Paper 2) · Chapter 3 · 2. Chemical Changes and Reactions
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- Direct combination reactions
- Decomposition reactions brought about by heat, light and electricity
- Displacement reactions and the role of reactivity
- Double decomposition (double displacement): sodium sulphate with barium chloride, silver nitrate with sodium chloride, lead nitrate with potassium iodide
- Energy changes: exothermic and endothermic reactions involving heat, light and electricity