Daily Practice · GCSE Science

Daily Practice - GCSE Science

17th July 1996

5 questions · GCSE · 584 questions in this band

1
Concentration, Yield and Atom Economy
Give the formula for atom economy.
2
Chemical Changes
State the pH value of a neutral solution.
3
Reactivity, Acids and Salts
Why is aluminium extracted by electrolysis rather than by reduction with carbon?
4
Electrolysis
Aqueous copper sulfate solution is electrolysed using inert graphite electrodes. State the products formed at (a) the cathode and (b) the anode, giving a reason for each.
5
Energy Changes
Using the values in the previous question, calculate the overall energy change for the reaction.

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