10 SECTION B – Module C3 4
This question is about allotropes of carbon. (a) Diamond is one allotrope of carbon.
Diamond is used in jewellery. Explain why. ................................................................................................................................................... .............................................................................................................................................. [1] (b) Graphite is another allotrope of carbon. Graphite is used in pencil leads. Look at the structure of graphite.
Explain, using ideas about structure and bonding, why graphite is used in pencil leads. ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... .............................................................................................................................................. [2]
Š OCR 2014