Fractional Distillation of Crude Oil

Question 1

How was crude oil formed?

Answer 1

Formed from the buried remains of plants and animals - it’s a fossil fuel. Over millions of years, the remains turn to crude oil, which can be extracted by drilling and pumping

Question 2

Crude oil is a mixture of …

Answer 2

many different compounds most of which are Hydrocarbon molecules

Question 3

What is a mixture?

Answer 3

A mixture consists of 2 or more elements / compounds that AREN’T chemically bonded together

Question 4

Hydrocarbons are [ ] just like petrol and diesel

Answer 4

Fuels

Question 5

There’re no [ ] between different parts of a mixture therefore they all keep their [ ], such as their [ ] points. This means that the different part of the mixture can be separated out using [ ].

Answer 5

chemical bonds
original proprieties
condensing
physical methods

Question 6

Crude oil is split into separated groups of [ ].

Answer 6

Hydrocarbons

Question 7

How does fractional distillation work?

Answer 7

The fractionating column works continuously, with heated crude oil piped in at the bottom.
The vaporised oil rises up the column and the various fractions are constantly tapped off at the different levels where they condense