1. Trilogy – Chemistry – CHAPTER 7 – Hydrocarbons fractional distillation
Define alkane and alkene.
Draw diagrams to show the structure of these molecules.
Label the diagram below to show the fractional distillation of crude oil.
Discuss how crude oil is separated by boiling points.
KEY WORDS:
hydrocarbon
crude oil
viscosity
volatile
fractional distillation
boiling point
cracking
ASSESSMENT: 1

2. Trilogy – Chemistry – CHAPTER 7 – Hydrocarbons fractional distillation
Label the diagram below to show the fractional distillation of crude oil.
Define alkane, alkene, alcohol and ester.
Draw diagrams to show the structure of these molecules.
Alkane – hydrocarbon with Alkene – hydrocarbon with
single covalent bond C=C bonds
Refinery gas - fuel
Petrol - cars
Naphtha – make chemicals
Kerosene – jet fuel, paraffin for heating & lighting
CRUDE OIL
Discuss how crude oil is separated by boiling points.
Small chain hydrocarbons evaporate and travel towards the top of the column
Large chain hydrocarbons separate at the bottom of the column as and stay as a liquid
The boiling point increases as you go down the fractionating column
Diesel – fuel for diesel engines
Lubricating oil / fuel oil – machinery, ships & factories
Heat
350 ⁰C
KEY WORDS:
hydrocarbon
crude oil
viscosity
volatile
fractional distillation
boiling point
cracking
ASSESSMENT:
Residue – bitumen, asphalt 2