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Covalent structures (Simple molecules (H2, Cl2, H20, O2, HCl, CH4, Strong…
Covalent structures
Simple molecules
H2, Cl2, H20, O2, HCl, CH4
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Giant covalent molecules
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Diamond, graphite, graphene, silicon dioxide
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Graphite
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Layers themselves have strong bonds so high melting point
No bonds between layers so soft and slippery (good for lubricant)
Since only 3/4 valence electrons are bonded with, each atom has a delocalised electron (which can move throughout the structure) so it conducts heat and electricity
Graphene
One layer of graphite, literally one atom thick
Strong and light, used in composite materials to increase strength without much weight
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Polymers
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Greater intermolecular forces than simple molecules, so solid at RT
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