Giant Covalent/Covalent Network Bonding Flashcards
1
Q
What has giant covalent bonds?
A
Sand (SiO2)
Diamond (C)
Graphite (C)
2
Q
What is their structure like?
A
Very 3D like & lattice
3
Q
Why do they don’t conduct electricity when solid or molten?
Except graphite
A
No delocalised electrons to transfer electricity
Except graphite
4
Q
Why do they have very high melting points?
A
Strong covalent bonding in lattice
5
Q
Why do we write with graphite?
A
Destroying the layer of secondary bonding of dispersion… shows black stuff
6
Q
Why are they hard?
A
Atoms are bound in strong covalent bonding
