Passing electricity through compounds: electrolysis
2 marks · NormalState what is meant by (a) an anion, and (b) a cation.
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(a) An anion is a negatively charged ion.
(b) A cation is a positively charged ion.
Common mistakes: Mixing up anion and cation definitions.
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Marking points
B1 · 1 mark · Correctly states that an anion is a negatively charged ion.
B1 · 1 mark · Correctly states that a cation is a positively charged ion.
Worked solution
a. An anion is a negatively charged ion.
b. A cation is a positively charged ion.