C9 Crude Oil And Fuels

Question 1

What is crude oil?

Answer 1

Mixture of many different carbon compunds

Question 2

What is a mixture?

Answer 2

2 or more elements or compounds not chemically combined.

Question 3

What are compounds that contain only carbon and hydrogen called?

Answer 3

Hydrocarbons.

Question 4

What do you describe alkanes as?

Answer 4

Saturated hydrocarbons.

Question 5

What are the first four alkanes?

Answer 5

Methane.
Ethane.
Propane.
Butane.

Question 6

What are the properties of short chain hydrocarbons?

Answer 6

Low boiling point.
High volatility(tendency to turn into gas).
Low viscosity (very runny(viscosity=how easily it flows)).
High flammability(how easily it burns).

Question 7

What are the properties of long chain hydrocarbons?

Answer 7

High boiling point.
Low volatility.
High viscosity(thick).
Low flammability(has smoky flame).

Question 8

What is fractional distillation?

Answer 8

Separating fractions as each fraction boils at different temperature range.

Question 9

What is it called when the carbon and hydrogen in the fuel are oxidised completely?

Answer 9

Complete combustion?

Question 10

What happens when there is not enough Oxygen inside an engine?

Answer 10

Incomplete combustion.

Question 11

What happens if there is incomplete combustion inside an engine?

Answer 11

Instead of all carbon in fuel turning into carbon dioxide, carbon monoxide also formed.

Question 12

Is carbon monoxide a toxic gas?

Answer 12

Yes.

Question 13

What is cracking?

Answer 13

The breaking down of larger hydrocarbons into smaller 1s.

Question 14

What is the name of the reaction that takes place when hydrocarbons are cracked?

Answer 14

Thermal decomposition.

Question 15

What are unsaturated hydrocarbons called?

Answer 15

Alkenes.