Oxidation and reduction
3 marks · EasyComplete the following sentences about oxidation and reduction in terms of oxygen transfer.
(a)[1 mark]
A substance is oxidised if it ___ oxygen.
(b)[1 mark]
A substance is reduced if it ___ oxygen.
(c)[1 mark]
In the reaction: , name the substance that is reduced.
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Show answer
(a) gains
(b) loses
(c) Fe_2O_3
Show mark scheme and worked solution
Marking points
A1 (a) · 1 mark · 'gains' written in the blank for oxidation.
A2 (b) · 1 mark · 'loses' written in the blank for reduction.
A3 (c) · 1 mark · Identifies Fe_2O_3 as the reduced substance.
Worked solution
a) gains b) loses c) Fe_2O_3 (iron(III) oxide)