Changing the surface area of the reactants
2 marks · NormalState two factors, other than surface area, that can increase the rate of a reaction between a solid and a liquid.
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Increase temperature; increase concentration of the liquid; (chemical catalyst also accepted).
Also accept: Add a catalyst
Common mistakes: Repeating the same factor with different wording
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Marking points
B1 · 1 mark · Mentions increasing temperature.
B2 · 1 mark · Mentions increasing concentration of the liquid or adding a catalyst.
Worked solution
You can increase temperature and increase the concentration of the liquid (acid). A catalyst can also increase reaction rate.