Alkanes

Question 1

What is a sigma bond?

Answer 1

The result of the overlapping of two atomic orbitals; one from each atom

Question 2

What bond angle do alkanes have

Answer 2

109.5

Question 3

Incomplete combustion produces

Answer 3

carbon monoxide

Question 4

Why is incomplete combustion bad?

Answer 4

Carbon monoxide is poisonous

Question 5

The longer the chain, the higher the

Answer 5

boiling point

Question 6

Why do longer chains have higher boiling points?

Answer 6

1) Longer chains have larger molecular larger surface area
2) more surface contact occurs between molecules
3) therefore London forces are greater so more energy is required

Question 7

Why do alkenes not react?

Answer 7

1) The bonds between atoms are very strong

2) There are no polar bonds

Question 8

Complete combustion produces

Answer 8

Carbon dioxide and water

Question 9

Incomplete combustion produces

Answer 9

carbon monoxide and water

Question 10

Why are alkanes used as a fuel?

Answer 10

Lots of energy is released when its burnt