Daily Practice · GCSE Science

Daily Practice - GCSE Science

20th June 1995

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 what is meant by the activation energy of a reaction.
4
Bond Energies, Cells and Fuel Cells
State whether forming a new chemical bond requires energy or releases energy.
5
Rate and Extent of Chemical Change
State the four factors that can increase the rate of a chemical reaction.

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