polymers and allotropes of carbon

Question 1

what is a polymer

Answer 1

a chain of repeating units joined by strong covalent bonds

Question 2

properties of polymers

Answer 2

solid at room temp and lower boiling points than ionic or giant molecular compounds

Question 3

what are allotropes

Answer 3

different structural forms of the same element in the same physical state

Question 4

characteristics of diamond

Answer 4

very hard, four covalent bonds, high melting point, doesn’t conduct electricity

Question 5

characteristics of graphite

Answer 5

three covalent bonds, sheets of atoms arranged in hexagons, no covalent bonds between layers, high melting point, conducts heat and electricity, good lubricant

Question 6

characteristics of graphene

Answer 6

sheet of carbon atoms joined together in hexagons, one atom thick, one atom thick, very strong and light, can conduct electricity

Question 7

what are fullerenes

Answer 7

molecules of carbon, shaped like closed tubes or hollow balls

Question 8

uses of fullerenes

Answer 8

can be used to deliver a drug into the body, industrial catalysts, lubricants

Question 9

what fullerene was the first to be discovered?

Answer 9

buckminsterfullerene