Covalent Bonding Flashcards
What shell is used in covalent bonding?
The outer shell
What happens with electrons in covalent bonding?
Sharing electrons between atoms.
What is the formula for Methane?
CH4
What is the formula for Ammonia?
NH3
What are the forces of attraction in simple covalent structures like between molecules?
Very weak.
What are the boiling points of simple covalent bonds like?
Very low.
Why do simple covalent bonds have low boiling points?
Because of the weak intermolecular forces they get broken up easily.
Do simple covalent bonds conduct electricity?
They don’t because there are no charges or ions.
Why do giant covalent bonds have high melting points?
They have strong covalent bonds, there are lots of them
Do giant covalent bonds conduct electricity?
No. Only graphite.
How many covalent bonds are around one atom in diamond?
Four
Why is diamond so hard?
Because the covalent bonds are in a very rigid structure.
What are the properties of Diamond?
Good conductor of heat
Bad conductor of electricity
Strong
High melting point
What are the properties of Graphite?
Layers that slide Soft Slippery Good conductor of heat Good conductor of electricity
Why is graphite slippery?
They are made of layers with weak intermolecular bonds and can be rubbed off easily.
