Answer is A Graphite is a material which despite being in the solid phase, is able to reduce friction between two surfaces sliding against each
other without the need for a liquid oil medium. It makes a good lubricant whereas diamond does not. Elaborate on why graphite is a
good lubricant
A)
Graphite consists of layers of carbon that have weak attractions between
them. With a little force, the layers can easily slide past one another,
B)
Graphite consists of carbon atoms bonded weakly to one another in
hexagonal planes. This weak attraction can be broken easily
Graphite and diamond are allotropes (structures made of same element)
but graphite has carbon atoms spaced farther apart and the bonds between
carbon atoms are broken easier.
D)
Graphite sheets can slide past one another easily due to the hexagonal-
formed planes that diamond does not have.