Crude Oil And Fuels

Question 1

Crude oil:

Answer 1

Is a mixture of many different compounds.

Question 2

Hydrocarbon:

Answer 2

Hydrogen and carbon atoms

Question 3

Alkanes:

Answer 3

C n H (2n+ 2)

Question 4

Fractional distillation of oil:

Answer 4

Crude oil is separated into fractions using fractional distillation.

Lighter fraction make better fuels as they are easily and burn well with cleaner flames.

Question 5

Burning hydrocarbon fuels:

Complete combustion:

Answer 5

Plenty of air, carbon and hydrogen are completely oxidised . They produce carbon dioxide + water.

Question 6

Incomplete combustion:

Answer 6

All fossil fuels:

Oil, coal and natural gas.

Carbon dioxide turn into carbon monoxide which is a toxic gas.

Red blood feel pick it up and carry into the blood instead of oxygen.

Question 7

Cracking hydrocarbons:

Answer 7

Large molecules broken down to smaller molecules by passing the vapour over a hot catalyst.