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CAIE IGCSE Chemistry 7.2.2 Amphoteric oxides as oxides that react

CAIE IGCSE Chemistry 7.2.2 Amphoteric oxides as oxides that react
Cambridge IGCSE Chemistry 0620 syllabus for exams in 2026, 2027 and 20282026–2028

Practise recognising amphoteric oxides from their reactions with both acids and bases, including salt-and-water products.

How this is tested

  • state that amphoteric oxides neutralise both acids and alkalis
  • use reaction tables to pick an oxide that reacts with HCl and NaOH(aq)
  • write or complete equations where Al2O3 reacts with NaOH to form a salt and water

Question 6

[Maximum number: 2]

This question is about metals.

Question 6(d)

(a)

Zinc oxide neutralises both acids and bases.

[ 2 ]

Question 6(d)(i)

(i)

State the general name given to oxides that neutralise both acids and bases.

[ 1 ]

Question 6(d)(iii)

(ii)

Name the zinc compound that forms when zinc oxide neutralises dilute sulfuric acid.

[ 1 ]