What processes are used to analyse the composition of metal oxides?
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What will be formed when magnesium reacts with oxygen?
Magnesium oxide
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How is the magnesium sample encouraged to fully oxidise?
By periodically lifting the crucible lid to let in air.
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How is the mass of magnesium oxide calculated?
By subtracting the mass of the empty crucible from the final mass after heating.
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When should heating the crucible be stopped?
When the mass stops changing and stabilises.
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What is measured to determine the formula of a metal oxide?
The mass of the metal before and after reacting with oxygen to form the oxide.
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