Difference between revisions of "Giant Metallic Structure"
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| style="height:20px; width:200px; text-align:center;" |There is a strong [[Electrostatic Force|electrostatic force]] between the [[Positive Ion|positive ion]]s and the [[Delocalised Electrons|delocalised electrons]]. | | style="height:20px; width:200px; text-align:center;" |There is a strong [[Electrostatic Force|electrostatic force]] between the [[Positive Ion|positive ion]]s and the [[Delocalised Electrons|delocalised electrons]]. | ||
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+ | ===References=== | ||
+ | ====AQA==== | ||
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+ | :[https://www.amazon.co.uk/gp/product/0198359381/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0198359381&linkCode=as2&tag=nrjc-21&linkId=47c8d1ae58d8b3a5e2094cd447154558 ''Giant metallic structures, pages 54-55, GCSE Chemistry; Third Edition, Oxford University Press, AQA ''] |
Latest revision as of 15:38, 5 November 2019
Contents
Key Stage 4
Meaning
A giant metallic structure is a group of metal atoms held together by metallic bonds.
About Giant Metallic Structures
- In giant metallic structure the metal atoms are held together as a lattice of positive ions surrounded by a sea of delocalised electrons.
- In a pure element the atoms are arranged in a regular lattice.
- When there is a mixture of metal elements it is called an alloy and the different atoms change the pattern in the lattice.
- A small number of different metal atoms added to a material can change the physical properties and chemical properties of the material.
Bulk Properties
Property | Reason |
Malleable and ductile | The delocalised electrons are free to move so when the metal ions slide past each other the metallic bonds remain just as strong and the material doesn't break. |
Good Electrical Conductor | The delocalised electrons are free to move in an electrical current. |
Good Thermal Conductor | The delocalised electrons are free to move through the metal carrying thermal energy through the material. |
High Melting Point | There is a strong electrostatic force between the positive ions and the delocalised electrons. |