2.6 Giant Covalent Structures Flashcards
1
Q
What are giant covalent structures+eg.
A
Three dimensional structures held together by covalent bonds
Graphite
Diamond
Silicon(IV) oxide
2
Q
What are allotropes+eg
A
Same element different atom arrangement
Diamond and graphite are allotropes of carbon
3
Q
Describe the structure of a diamond
A
Tetrahedral with each carbon atom being bonded to another 4
4
Q
What are the properties+reasons of diamond
A
High MP +BP strong covalent bonds throughout the structure
Cannot conduct electricity-all electrons involved in bonding, none free to carry charge
Insoluble in water
Drilling equipment
5
Q
Use of diamond
A
Cutting tools
6
Q
Use of graphite
A
Lubricant and electrodes
