CH-1109
Types of oxides
Chemistry · Secondary 4 · Medium · Types of oxides
Aluminium and zinc are metals in the reactivity series. Their oxides show different behaviours and they are extracted from ores in different ways.
Which statement about these metals and their oxides is correct?
Which statement about these metals and their oxides is correct?
- Both Al₂O₃ and ZnO are amphoteric; aluminium is extracted by electrolysis, zinc by reduction with carbon.
- Both Al₂O₃ and ZnO are basic; both metals are extracted by electrolysis.
- Al₂O₃ is amphoteric, ZnO is basic; both metals are extracted by reduction with carbon.
- Al₂O₃ is acidic, ZnO is amphoteric; aluminium is less reactive than zinc.
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