Covalent Ionic Flashcards
1
Q
Giant ionic structure always with ionic bonding
A
High melting - boiling
Closely packed 3D lattice
Attraction between changed ions - electrostatic attraction - very strong
Lots of energy needed to overcome bonds.
NaCl
2
Q
Charges and giant covalent structures.
A
Higher charges higher electrostatic force of attraction.
High melting boiling
3
Q
Giant covalent structures
A
Bonded by strong covalent bonds.
Lots of energy to break um - Very high melting boiling.
Insoluble don’t conduct e
4
Q
Diamond
A
Giant co struct
Carbon forms 4 covalent bonds.
Very rigid extremely hard.
Used for drill tips and cutting tools.
5
Q
Graphite
A
Each Carbon only forms 3 covalent bonds = layers free to slide past each other.
Leaves delocalised e- only non metal which conducts e- well.
Lubricant.
