Daily Practice

GCSE Science

19th December 1991

5 questions · GCSE · 584 questions in this band

1
Energy Changes
Using the values in the previous question, calculate the overall energy change for the reaction.
2
Exothermic and Endothermic Reactions
State the energy transfer that occurs during an exothermic reaction.
3
Bond Energies, Cells and Fuel Cells
State one factor that affects the size of the voltage produced by a chemical cell.
4
Rate and Extent of Chemical Change
State two units that the rate of a reaction can be measured in.
5
Rates of Reaction
Explain why increasing the surface area of a solid reactant increases the rate of a reaction.

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