Which are the different useful compounds of carbon?
All of these
Coal is a carbon compound used as fuel, diamond is the hardest substance which is also a form of a carbon compound.
How can 3 completely different looking substances be carbon,that is, Diamond, graphite and Coal?
(a) Write two points of difference in the structures of diamond and graphite. (b) Explain why graphite can be used as a lubricant but diamond cannot. (c) Explain why diamond can be used in rock drilling equipment but graphite cannot. (d) State one use of diamond which depends on its 'extraordinary brilliance' and one use of graphite which depends on its being 'black and quite soft'.