Reactions of metals with water
2 marks · NormalName the solid products formed when:
(a)[1 mark]
zinc reacts with steam,
(b)[1 mark]
iron reacts with steam.
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(a) Zinc oxide (ZnO)
(b) Tri-iron tetroxide (Fe3O4)
Common mistakes: Giving incorrect oxide formulae (e.g., Zn(OH)2 instead of ZnO, FeO instead of Fe3O4)
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Marking points
A1 (a) · 1 mark · Correctly names zinc oxide (ZnO) as the product.
A2 (b) · 1 mark · Correctly names tri-iron tetroxide (Fe3O4) as the product.
Worked solution
a) Zinc reacts with steam to form zinc oxide (ZnO). (1)
b) Iron reacts with steam to form tri-iron tetroxide (Fe3O4). (1)