Daily Practice - GCSE Science
Biology, chemistry and physics recall, definition and calculation, drawn from every strand.
22nd February 2025
- 1Chemical Changes
Write the word equation for the reaction between zinc and hydrochloric acid.
- 2Reactivity, Acids and Salts
Why is aluminium extracted by electrolysis rather than by reduction with carbon?
- 3Electrolysis
In the industrial extraction of aluminium, explain why the carbon anodes need to be replaced regularly.
- 4Energy Changes
State whether the combustion of methane is exothermic or endothermic.
- 5Exothermic 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.
Recent GCSE Science sheets
Every sheet is deterministic: the same date always regenerates the same five questions. All of February 2025, including the monthly compilation PDF.