Difference between revisions of "Giant Covalent Structure"
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===About Giant Covalent Structures=== | ===About Giant Covalent Structures=== | ||
− | : '''Giant covalent structures''' are [[molecule]]s are made of a large number of [[atom]]s. | + | : '''Giant covalent structures''' are [[molecule]]s are made of a large number of [[non-metal]] [[atom]]s joined by [[Covalent Bond|covalent bonds]]. |
: The [[atom]]s in a '''giant covalent structure''' are arranged in a regular [[lattice]] (a repeating pattern of [[element]]s. | : The [[atom]]s in a '''giant covalent structure''' are arranged in a regular [[lattice]] (a repeating pattern of [[element]]s. | ||
− | === | + | ===Bulk Properties=== |
+ | : '''Giant Covalent Structures''' usually have very high [[Melting Point|melting points]] due to the strong [[Chemical Bond|chemical bonds]] between [[adjacent]] [[atom]]s. | ||
+ | : '''Giant Covalent Structures''' may have good or poor [[Electrical Conductor|electrical conductors]] depending on whether there are any [[electron]]s free to move between [[atom]]s. | ||
+ | : [[Diamond]] is a poor [[Electrical Conductor|electrical conductor]] because all the [[electron]]s are shared by [[adjacent]] [[atom]]s so none are free to move between [[atom]]s. | ||
+ | : [[Graphite]] and [[graphene]] are good [[Electrical Conductor|electrical conductors]] because the [[Carbon]] [[atom]]s only form 3 [[bond]]s with [[adjacent]] [[atom]]s allowing a spare [[electron]] in each [[atom]] to move freely around the [[molecule]]. |
Revision as of 17:33, 27 December 2018
Key Stage 4
Meaning
Giant covalent structures are very large molecules in which all the atoms are held to one another by covalent bonds.
About Giant Covalent Structures
- Giant covalent structures are molecules are made of a large number of non-metal atoms joined by covalent bonds.
- The atoms in a giant covalent structure are arranged in a regular lattice (a repeating pattern of elements.
Bulk Properties
- Giant Covalent Structures usually have very high melting points due to the strong chemical bonds between adjacent atoms.
- Giant Covalent Structures may have good or poor electrical conductors depending on whether there are any electrons free to move between atoms.
- Diamond is a poor electrical conductor because all the electrons are shared by adjacent atoms so none are free to move between atoms.
- Graphite and graphene are good electrical conductors because the Carbon atoms only form 3 bonds with adjacent atoms allowing a spare electron in each atom to move freely around the molecule.