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CAIE IGCSE Chemistry Bases with Acids and Ammonium Salts

CAIE IGCSE Chemistry Bases with Acids and Ammonium Salts
Cambridge IGCSE Chemistry 0620 syllabus for exams in 2026, 2027 and 20282026–2028

Practise predicting base reactions with acids and ammonium salts, including neutralisation products, ammonia release and observations used to confirm each reaction.

How this is tested

  • predict salt and water when a base neutralises an acid and write the balanced equation
  • predict ammonia, water and a salt when an alkali is warmed with an ammonium salt
  • use pH change, indicator colour or ammonia observations to identify basic behaviour

Question 4(d)

[Maximum number: 3]

Solid sodium hydroxide is a base which dissolves to form an aqueous solution, NaOH(aq).

Complete the word equation for the reaction of NaOH(aq) with ammonium chloride.

Figure for Question 4(d) — CAIE IGCSE Chemistry