Daily Practice · GCSE Science

Daily Practice - GCSE Science

Biology, chemistry and physics recall, definition and calculation, drawn from every strand.

22nd February 2014

5 questions · GCSE · 584 questions in this band

1
Chemical Changes
Calculate the number of moles of sodium hydroxide in 200 cm3 of a 0.500 mol/dm3 solution.
2
Reactivity, Acids and Salts
Why is aluminium extracted by electrolysis rather than by reduction with carbon?
3
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.
4
Energy Changes
Give one everyday example of an endothermic process.
5
Exothermic and Endothermic Reactions
Explain, in terms of the reaction pathway, why adding a catalyst increases the rate of a reaction without changing the overall energy change of the reaction.

You are looking at an earlier sheet. Today's sheet is the one that adds a day.

Your run is kept in this browser only, and there is no account.

Every sheet is deterministic: the same date always regenerates the same five questions. All of February 2014, including the monthly compilation PDF.