CAIE IGCSE Chemistry 10.2.1 Ammonium salts & nitrates are used

Cambridge IGCSE Chemistry 0620 syllabus for exams in 2026, 2027 and 20282026–2028

Practise recognising ammonium salts and nitrates as fertilisers, including uses of ammonium sulfate, ammonium nitrate and ammonia.

How this is tested

state that ammonium sulfate or ammonium nitrate is used as a fertiliser
identify ammonia as a starting chemical for fertiliser manufacture
choose the correct statement linking sulfuric acid reacting with ammonia to a fertiliser

[Maximum number: 1]

The Haber process is used to manufacture ammonia.

Ammonia reacts with an acid to form ammonium sulfate, $\left(\mathrm{NH}_{4}\right)_{2} \mathrm{SO}_{4}$ .

State one use of ammonium sulfate.