Daily Practice

GCSE Science

29th January 1990

5 questions · GCSE · 584 questions in this band

1
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.
2
Energy Changes
Using the values in the previous question, calculate the overall energy change for the reaction.
3
Exothermic and Endothermic Reactions
State the energy transfer that occurs during an exothermic reaction.
4
Bond Energies, Cells and Fuel Cells
State one factor that affects the size of the voltage produced by a chemical cell.
5
Rate and Extent of Chemical Change
State two units that the rate of a reaction can be measured in.

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