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Question
Define two chemical properties of aluminium.
Definition
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Solution
Reaction with oxygen: Aluminium reacts with oxygen to form a thin, protective layer of aluminium oxide.
\[\ce{4Al + 3O2 -> 2Al2O3}\]
Reaction with acids: Aluminium reacts with dilute acids to form the corresponding salt and liberate hydrogen gas.
\[\ce{2Al + 6HCl -> 2AlCl3 + 3H2}\]
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