Daily Practice

GCSE Science

26th August 1991

5 questions · GCSE · 584 questions in this band

1
Electrolysis
Concentrated sodium chloride solution (brine) is electrolysed using inert electrodes. State the products formed at the cathode and at the anode.
2
Energy Changes
A reaction profile shows the reactants at 220 kJ and the products at 340 kJ. State whether the reaction is exothermic or endothermic.
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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