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Task 1 - Mini practical
Task 1 - Mini practical
Instructions:
Put 3 spatulas of hydrated copper sulphate (blue crystals) into an evaporating dish and heat over a blue Bunsen flame.
Once the reaction has finished, leave to cool.
While you are waiting for it to cool, write down your observations.
Was this reaction endothermic or exothermic?
3. Add some distilled water, a few drops at a time to the powder.
What are your observations?
Was this reaction endothermic or exothermic?
Task 2 - Explainer vid
Task 2 - Explainer vid
Watch the explanation video and then answer the questions on the companion sheet.
Task 3 - Equation
Task 3 - Equation
Blue copper sulfate is hydrated which means that the copper and sulfate ions in its crystal structure are surrounded by water molecules. When heated, the water is driven off, producing anhydrous copper sulfate which is a white solid. The reaction is reversible, which means that as soon as any water is around, anhydrous copper sulfate will be converted back into the blue hydrated form. The forward reaction is takes in heat energy (it is endothermic), which means that the reverse reaction must absorb heat energy (exothermic).
Use the information above the diagram to bullet point the reaction on your companion sheet
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