Topic 3 - 3.5 - Covalent Networks Flashcards
1
Q
Name all of the properties of COVALENT NETWORKS
A
- They have high melting and boiling points
- They are insoluble
- They are insulators EXCEPT for carbon in graphite form
- They exist as solids
2
Q
Why do covalent networks have high melting/boiling points
A
The covalent bonds that hold them together are very strong, meaning that it would require a lot of energy to break each individual bond
3
Q
Give three examples of covalent networks
A
- Carbon (Diamond and Graphite)
- Boron
- Silicon
4
Q
Give two examples of covalent compound networks
A
- Silicon Dioxide
- Silicon Carbide
5
Q
Describe what is meant by a covalent network
A
A giant structure in which all of the atoms are covalently bonded together
6
Q
Why do covalent structures not conduct electricity?
A
Because there are no charged particles that are free to move
