What are fullerenes?
Discrete molecules made entirely of carbon atoms arranged into hollow shapes.
AQA GCSE Combined Science: Trilogy (8464) — Chemistry — Higher · 5.2.3.3
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What are fullerenes?
Discrete molecules made entirely of carbon atoms arranged into hollow shapes.
What ring sizes occur in fullerene structures, and which are most common?
Mainly six-membered rings; some fullerenes also contain five- or seven-membered rings.
How do fullerenes differ from graphene in their overall structure?
Fullerenes are discrete molecules; graphene forms continuous layers.
Which fullerene was discovered first?
Buckminsterfullerene, .
What is the shape and structure of buckminsterfullerene?
A spherical molecule with carbon atoms arranged in a cage.
Why is graphene useful in electronics and composite materials?
Because of its thinness, strength, and electrical conductivity.
What type of structure does graphene have?
A very strong giant covalent structure.
What is graphene?
A form of carbon made from a single layer of graphite.
Why does graphene conduct electricity?
Each carbon atom forms only three covalent bonds, leaving delocalised electrons free to move through the layer.
How are carbon atoms arranged and bonded in graphene?
In a flat hexagonal lattice, with each carbon atom covalently bonded to three others.