covalent substances Flashcards
1
Q
what can substances with a covalent bond become
A
- simple molecules
- giant structures
2
Q
name three examples of giant structures
A
- diamond
- graphite
3
Q
what are giant structures called
A
macromolecules
4
Q
what do simple molceules not do
A
conduct electricity
5
Q
what are the properties of simple molecules
A
- low boiling point
- low melting point
- gases at room temperature
6
Q
what are the properties of giant structures
A
- strong bonds
- high melting and boiling points
- don’t conduct electricity
7
Q
what are the properties of diamond
A
- each carbon atom had 4 covalent bonds
- rigid
- pretty and sparkly
8
Q
what are the properties of graphite
A
- each carbon atom had 3 covalent bonds
- layers
- soft and slippery
- weak molecular forces
- good conductor of heat
