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12 questions from this quiz
It gains oxygen atoms
It loses oxygen atoms
Metal oxides
Alkali metals
2Mg+O2→2MgO2\text{Mg} + \text{O}_2 \rightarrow 2\text{MgO}2Mg+O2→2MgO
As metal oxides or compounds
Electrolysis
Zinc and iron
Often found as pure metal in ground
Reacts immediately with oxygen in air
Iron oxide is reduced to iron
More reactive = harder to extract
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