Covalent bonds

Question 1

What is a covalent bond?

Answer 1

When 2 nonmetals share electrons to achieve a full outer shell

Question 2

What is the use of C60 Fullerene?

Answer 2

Used for drug delivery systems becuase they have a large surface area to trap catalyst molecules

Question 3

What are the features of C60 Fullerene?

Answer 3

They cannot conduct electricity
They have a low melting and boiling point
They are slippery

Question 4

Why can’t C60 Fullerene conduct electricity?

Answer 4

Because the 4th electron in C60 isn’t bonded, and the electrons can only freely move within their own structures.

Question 5

What are the features of Diamond?

Answer 5

They are very hard but brittle
They have a high boiling

Question 6

Why is diamond so hard?

Answer 6

-Each carbon atom is covalently bonded to 4 others
-These are strong covalent bonds

Question 7

What are the features of graphite?

Answer 7

-Soft and slippery
-Can conduct electricity and heat
-High melting

Question 8

Why is graphite soft and slippery?

Answer 8

-Each carbon atom is bonded to 3 others
-Their layers slide over each other because there are only weak forces of attraction between layers

Question 9

Why is graphite a conductor of both electricty and heat?

Answer 9

-Each carbon atoms forms 3 bonds
-The free electron can move freely