Covalent Substances Flashcards
0
Q
What are the two types of covalent substances?
A
1: Simple molecules
2: Giant covalent structures
1
Q
True or false?
Covalent substances have strong covalent bonds.
A
True.
2
Q
Simple molecules have high or low melting/ boiling points?
A
VERY low; molecules are easily parted from each other.
3
Q
True or false?
BOTH simple molecules and giant covalent structures have very weak intermolecular forces.
A
True.
4
Q
Do covalent substances conduct electricity?
A
No because they’re not metals, HOWEVER, graphite does.
5
Q
Why does graphite conduct electricity?
A
Each carbon atom has one delocalised (free) electron and these free electrons conduct heat and electricity.
6
Q
True or false?
Simple molecules have big molecules.
A
False: they have small molecules.
