
Edexcel IGCSE Chemistry | Unit 3.17–3.18 | Physical Chemistry
This Synapse Science resource introduces the concept of reversible reactions through clear theory, visual examples, and a hands-on practical. Students observe the dehydration and rehydration of copper(II) sulfate and apply the symbol ⇌ to write balanced reversible equations.
This is an engaging and visual lesson designed to help students master a core concept in chemical equilibrium through observation and analysis.
Specification Points Covered- 3.17: Know that some reactions are reversible and this is indicated by the symbol ⇌ in equations
- 3.18: Describe reversible reactions such as the dehydration of hydrated copper(II) sulfate and the effect of heat on ammonium chloride
- Lesson Slides – Editable PowerPoint with theory, key reactions, and scaffolded examples
- Practical Worksheet – Investigate dehydration and rehydration of CuSO₄·5H₂O
- Observation & Conclusion Table – Students record colour changes and interpret reversibility
- Teacher & Technician Notes – Setup instructions, safety tips, model answer, and MSDS summary
- Demonstrates two real reversible reactions: hydrated copper sulfate and ammonium chloride
- Hands-on practical to reinforce visual understanding of chemical reversibility
- Symbol ⇌ introduced and applied in both word and symbol equations
- Clean Synapse Science layout for smooth delivery in class or as a revision activity
Edexcel IGCSE Chemistry, Reversible Reactions, Copper(II) Sulfate, Hydrated Salts, ⇌ Symbol, Physical Chemistry, Practical Chemistry, Synapse Science, Equilibrium, Worksheet
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