Daily Practice · GCSE Science

Daily Practice - GCSE Science

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

30th January 2023

5 questions · GCSE · 584 questions in this band

1
Electrolysis
Explain why solid sodium chloride does not conduct electricity, but molten sodium chloride does.
2
Energy Changes
A reaction profile shows the reactants at 150 kJ and the peak (activation energy point) at 195 kJ. Calculate the activation energy.
3
Exothermic and Endothermic Reactions
State the energy transfer that occurs during an exothermic reaction.
4
Bond Energies, Cells and Fuel Cells
State one factor that affects the size of the voltage produced by a chemical cell.
5
Rate and Extent of Chemical Change
State two units that the rate of a reaction can be measured in.

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