1.1. This question is about the metal aluminium.

i) Draw a labelled diagram to represent the structure and bonding in a metal.

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ii) Explain why a metal conducts electricity.

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1.2. Aluminium is used to make cans for drinks. 

Give two properties of aluminium that make it suitable for this use.

1.3. Aluminium is extracted from aluminium oxide (Al₂O₃) by electrolysis.

The electrolyte is aluminium oxide dissolved in molten cryolite.

 i) State why aluminium cannot be extracted by heating aluminium oxide with carbon.

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ii) Aluminium is produced at the negative electrode. The ionic half-equation for the reaction is:  Al³⁺ + 3e⁻ → Al

 State why this is a reduction reaction.

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iii) Complete the ionic half-equation for the reaction at the positive electrode.

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............................... O²⁻ → ................................... + .....................................