structure and bonding of carbon Flashcards
what are the different carbon forms in which atoms are arranged in different ways?
diamond, graphite, graphene and fullerenes.
what does each carbon atom form in a diamond?
forms 4 covalent bonds with other carbon atoms.
why is diamond hard?
held together by strong covalent bonds
what does diamond not conduct electricity?
it has no free (delocalised) electrons.
what is the structure of graphite?
carbon atoms form layers of hexagonal rings in which each carbon atom is bonded to 3 other carbon atoms.
due to graphite having layers of atoms that are not bonded together, what can the layers do?
can slide over each other
which makes graphite soft and slippery.
why can graphite conduct electricity
each carbon atom is delocalised.
why is graphite a good thermal conductor?
the delocalised electrons which can
move through the layers.
what is graphene
a single layer of graphite so is just one atom thick
Graphene conducts____ and is very_____.
Graphene conducts electricity and is very strong.
what are fullerenes?
molecules of carbon atoms with hollow shapes.
what does the Buckminster fullerene (bucky ball) have a formula of?
a formula of C60
what type of diameter does carbon nanotubes have?
very high length to diameter ration.
fullerenes uses
to deliver drugs to specific body parts, as catalysts and as reinforcement for composite materials.
what will graphite help create?
create new developments in the electronics industry in the future
