AQA · Chemistry · 8462
GCSE Chemistry: Metallic bonding
Bonding, structure, and the properties of matter · AQA GCSE Chemistry (8462), specification point 4.2.1.5. Cards are generated from the exam board's own specification for "Metallic bonding", and every card links back to the page it came from. Specification © AQA — used with attribution.
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Describe the structure of a metal.
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A giant structure of atoms arranged in a regular pattern.
Metals consist of ? structures of atoms arranged in a regular pattern.
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giant
Which electrons in a metal atom are delocalised?
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The electrons in the outer shell.
What does it mean for electrons in a metal to be delocalised?
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They are not fixed to one atom and are free to move through the whole structure.
What gives rise to strong metallic bonds?
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The sharing of delocalised electrons between the metal atoms.
The outer-shell electrons of metal atoms are ?, so they are free to move through the whole structure.
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delocalised
Are metallic bonds weak or strong?
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Strong — because delocalised electrons are shared throughout the giant structure.
How can you recognise a metallic giant structure from a bonding diagram?
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A regular lattice of positive metal ions surrounded by a 'sea' of delocalised electrons.
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