Daily Practice · GCSE Science

Daily Practice - GCSE Science

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

16th August 2019

5 questions · GCSE · 584 questions in this band

1
Reactivity, Acids and Salts
Define oxidation in terms of electrons.
2
Electrolysis
In the industrial extraction of aluminium, explain why the aluminium oxide is dissolved in molten cryolite rather than melted on its own.
3
Energy Changes
Explain, in terms of bonds, why breaking bonds is an endothermic process.
4
Exothermic and Endothermic Reactions
State the energy transfer that occurs during an exothermic reaction.
5
Bond Energies, Cells and Fuel Cells
State one factor that affects the size of the voltage produced by a chemical cell.

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