Hydrocarbons

Question 1

Hydrocarbons are made up from what?

Answer 1

Hydrogen and carbon

Question 2

Crude oil is a mixture of

Answer 2

Hydrogen

Question 3

Describe the temperature difference in a fractionating column

Answer 3

Hottest at bottom

Coolest at the top

Question 4

The process of separating hydrogens is

Answer 4

Fractional distillation

Question 5

Gases from crude oil are use used for

Answer 5

Domestic heating and cooking

Question 6

Petrol from crude oil is used for

Answer 6

Fuels for cars

Question 7

The fuel aircrafts use is called

Answer 7

Kerosene

Question 8

The fuels some cars and trains use is called

Answer 8

Diesel

Question 9

Fuel oil is used by

Answer 9

Large ships and power stations

Question 10

The 4 ways different hydrocarbon fractions differ from each other are

Answer 10

1) Number of carbon atoms they contain
2) Boiling points
3) Ease of ignition
4) Viscosity

Question 11

By what unit does the molecular formula change in neighbouring molecules in a homologous series?

Answer 11

CH2

Question 12

Examples of physical properties that differ within a homologous are (2)

Answer 12

Boiling points and melting points

Question 13

When hydrocarbon fuels burn in oxygen this is called?

Answer 13

Combustion

Question 14

What type of combustion occurs in a plentiful supply of oxygen?

Answer 14

Complete combustion

Question 15

What are the products of complete combustion

Answer 15

Carbon dioxide and water

Question 16

Bitumen is used for

Answer 16

Surfacing roads and roofs

Question 17

What are the products of incomplete combustion

Answer 17

Carbon dioxide, carbon monoxide, water and soot (carbon)

Question 18

What is the chemical test for carbon dioxide?

Answer 18

It turns limewater cloudy

Question 19

The homologous series most hydrocarbons is crude oil belong to is

Answer 19

Alkanes

Question 20

An example of an Sloane

Answer 20

Methane

Ethane

Butane

Pentane

Propane