Daily Practice

GCSE Science

9th June 1990

5 questions · GCSE · 584 questions in this band

1
Reactivity, Acids and Salts
Complete: acid + metal carbonate gives ...
2
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.
3
Energy Changes
Give one everyday example of an endothermic process.
4
Exothermic and Endothermic Reactions
State what is meant by the activation energy of a reaction.
5
Bond Energies, Cells and Fuel Cells
State whether forming a new chemical bond requires energy or releases energy.

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