Displacement reactions involving metal oxides
2 marks · NormalA student carries out experiments to determine the order of reactivity of four metals: potassium, zinc, aluminium, and iron. Write the correct order of these four metals in a reactivity series from most to least reactive.
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potassium, aluminium, zinc, iron (in that order)
Also accept: K, Al, Zn, Fe; potassium > aluminium > zinc > iron
Common mistakes: Writing the series in reverse order; Mixing up zinc and aluminium
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Marking points
M1 · 1 mark · Correctly identifies potassium as the most reactive.
A1 · 1 mark · Correctly writes full correct order for all four metals.
Worked solution
Potassium is the most reactive, followed by aluminium, zinc, and iron. The correct order is: