C7a- crude oil

Question 1

What is crude oil? (2)

Answer 1

a finite resource
consists of mainly plankton that was buried in the mud, crude oil is the remains of ancient biomass

Question 2

Draw methane and write the chemical formula

Answer 2

H CH4
H-C-H
H

Question 3

Draw ethane and write chemical formula

Answer 3

C2H6

Question 4

Draw propane and write chemical formula

Answer 4

C3H8

Question 5

Draw butane and write chemical formula

Answer 5

C4H10

Question 6

What is cracking?

Answer 6

The breakdown of long chain hydrocarbons into smaller chains

Question 7

Why do we require short chain hydrocarbons?

Answer 7

More useful (eg. more flammable)
Higher in demand

Question 8

Complete combustion of methane equation

Answer 8

methane + oxygen -> carbon dioxide + water + energy

Question 9

Boiling points in hydrocarbons?

Answer 9

As the hydrocarbon chain length increases, boiling point increases

Question 10

Viscosity of hydrocarbons? (how easily they flow)

Answer 10

As the hydrocarbon chain length increases, viscosity increases

Question 11

Flammability of hydrocarbons?

Answer 11

As the hydrocarbon chain length increases, flammability increases.