CAIE IGCSE Chemistry Diamond and Graphite Structure and Uses
Practise linking graphite's layers and mobile electrons to lubrication and electrodes and diamond's rigid bonded network to cutting applications.
- Syllabus
- 2026–2028
- Course
- Chemistry 0620
Exam points
- explain graphite lubrication because weak forces allow its carbon layers to slide over one another
- justify graphite electrodes using mobile electrons for conduction together with chemical inertness
- link diamond's hardness to a rigid three-dimensional covalent network for cutting tools
2.6.2—Relate the structures and bonding of question 1
[Maximum number: 1]
Graphite has a giant covalent structure.
Which statements about graphite are correct?
1 Carbon atoms form four covalent bonds with neighbouring atoms.
2 There are delocalised electrons between layers of carbon atoms.
3 Graphite is a useful lubricant.
4 Graphite is a good conductor of electricity.
A
1 and 2
B
1, 3 and 4
C
2, 3 and 4
D
3 and 4 only
C
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