Carbons in Society

Question 1

How are fossil Fuels made?

Answer 1

The dead remains of living organisms are compressed under layers of dirt for millions of years

Question 2

What happens if BROMINE is added to an unsaturated Hydrocarbon?

Answer 2

It will immediately decolorise (a saturated hydrocarbon would remain range)

Question 3

What is the general formula of an Alkalene?

Answer 3

Cn H2n

Question 4

What do alkenes have in common

Answer 4

They all have names ending in “ENE”
They all have 1 carbon to carbon double bond
They all have the same general formula

Question 5

What do homologous series all have in common

Answer 5

They all share the same general formula
They all have the same chemical properties
They all show a gradual change in physical properties

Question 6

What do ALKANES all have in common

Answer 6

They all have names ending in “ANE”
They all have carbon to carbon single bonds
They all have the same general formula?

Question 7

What is a fuel

Answer 7

A substance burned to produce energy.

Question 8

What is the test for carbon Dioxide?

Answer 8

Lime water turns cloudy if CO2 is present

Question 9

What is the test for water?

Answer 9

Cobalt Chloride paper turns blue to pink ….(if water is present?)

Question 10

What is the name for a chemical reaction that produces energy?

Answer 10

An exothermic reaction

Question 11

What is the molecular formula for an alkane?

Answer 11

Cn H2n+2

Question 12

What is a downside of burning a fossil fuel?

Answer 12

C)2 is released which contributes to the environment problems such as global warming and acid rain.

Question 13

Name a use for:
Naptha
Kerosene
Bitumen

Answer 13

Naptha - Plastic
Kerosene - Jet Fuel
Bitumen- Tar / Waterproofing flat roofs

Question 14

How does fractional distillation work?

Answer 14

Fractional distillation separates a mixture into separate components called fractions.The crude oil is evaporated and its vapours condense at different temperatures in the fractionating column. Gas top Liquid middle solid bottom of column

Question 15

What are the Fractions in order?

Answer 15

Gas Petrol Noptha Kerosene Diesel Lubrication oil Bitumen
G…P….N…..K…..D…. Lo…..Bridget

Question 16

What is the process used to separate Crude oil into different fractions?

Answer 16

Fractional Distillation

Question 17

What is a Hydrocarbon?

Answer 17

A compound made up of hydrogens and carbons ONLY

Question 18

What is crude Oil?

Answer 18

A brown black liquid which is a mixture of hydrocarbons which comes straight out of the ground.

Question 19

What are always produced when burning fossil fuels?

Answer 19

Water and CO2

Question 20

If Propene was polymerised what would it become?

Answer 20

Polypropene

Question 21

What are polymers

Answer 21

Large molecules made by joining lots of small molecules called monymers during a process called polymerisation

Question 22

Why is ‘CRACKING” useful?

Answer 22

It breaks down large hydrocarbons into smaller more useful hydrocarbons.