Edexcel C1 Topic 5
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What is crude oil?
A mixture of hydrocarbons
What is the definition of a hydrocarbon?
A compound which contains hydrogen and carbon only
How do we separate crude oil?
List the fractions in order and give their uses
Gases - cooking and heating
Petrol - fuel for cars
Naphtha - lighter fluid
Kerosene - fuel for aircrafts
Diesel - fuel for cars
Fuel oil - fuel for ships
Bitumen - suroadsroads
What is the word equation for the complete combustion of butane?
Butane + Oxygen --> Carbon Dioxide + Water
What toxic gas is produced during incomplete combustion and state the problem it causes
Carbon monoxide - prevents haemoglobin from carrying oxygen in the blood
How acid rain caused?
Burning fossil fuels produces sulphur dioxide which dissolves in the rain water
Name 3 problems associated with acid rain
Kills fish in lakes and rivers
Corrodes limestone buildings and statues
Washes minerals from the soil killing trees
Name two greenhouse gases released when hydrocarbons burn
What is a biofuel?
A fuel made from living things
What is the biofuel ethanol made from?
What are the advantages of using biofuels?
They are made from a renewable source
They are carbon neutral
What are the disadvantages of using biofuels?
They release carbon dioxide during production
They take up land for growing crops
Removal of the crops destroy animals habitats
Why is hydrogen a clean fuel?
It only produces water as a product
What makes a good fuel?
Gives off a lot of heat energy
Produces no smoke or ash
Easily stored e.g. Liquid
Why are alkenes unsaturated?
Because they contain a double bond
What is the formula for propane?
What is the formula for ethene?
Describe the chemical test for a double bond
Bromine water goes from orange to colourless
The breaking of long chain hydrocarbons into shorter alkanes and alkenes
What are the conditions for cracking?
Heat and a catalyst
The joining of lots of alkene monomers to make a long chain polymers by breaking their double bonds
What is the polymer of ethene called?
What is the polymer of chloroethene called?
State disadvantages of burning, burying and recycling plastics
Burning - release toxic gases
Burying - they are non-biodegradable so remain in landfill for years
Recycling - different plastics means they have to be sorted which is expensive
Edexcel C1 Topic 5
Edexcel Chemistry Topic