Daily Practice - GCSE Science
Biology, chemistry and physics recall, definition and calculation, drawn from every strand.
8th April 2026
- 1Chemical Changes
Calculate the number of moles of sodium hydroxide in 200 cm3 of a 0.500 mol/dm3 solution.
- 2Reactivity, Acids and Salts
Complete: acid + metal carbonate gives ...
- 3Electrolysis
Molten zinc chloride, ZnCl2, is electrolysed using inert electrodes. Write the half equation for the reaction at (a) the cathode, and (b) the anode.
- 4Energy Changes
Give one everyday example of an endothermic process.
- 5Exothermic and Endothermic Reactions
State what is meant by the activation energy of a reaction.
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