2.1.4 , 2.2.4 And 2.2.6 Covalent Bonding ,Simple Covalent, Giant Covalent Properties Flashcards
1
Q
Ammonia formula
A
NH3
2
Q
Methane formular
A
CH4
3
Q
Simple Covalent properties (4p)
A
Low melting point
Gas or liquid at room temperature
Mostly insoluble in water
Can’t conduct electricity
4
Q
Intramolecular bonds
A
Strong bonds (covalent bonds)
5
Q
Intermolecular bonds
A
Weak bonds between molecules
6
Q
Why do simple covalent structures have a low boiling and melting point
A
Weak intramolecular forces are easy to break
7
Q
Why do simple covalent structures not conduct electricity?
A
The molecules do not have a charge
8
Q
Giant covalent properties
A
- Very high melting and boiling point
- Have no charge and don’t conduct electricity (except graphite)
- Insoluble in water
9
Q
What giant covalent structure conducts electricity
A
Graphite
10
Q
Examples of giant covalent structures
A
Diamond
Graphite
Graphene
