Crude oil + natural gas Flashcards
How are natural gas and crude oil formed
underground over millions of years, high pressure and temps from animal and plants remains
What are natural gas and crude oil
finite resources
What is crude oil?
complex misture of lots of different hhydrocarbons
What is a hydrocarbon
compound which contains hydrogen and carbon atoms only
WHat is alkane general formula
CnH2n+2
What are hydrocarbons soperated into
fractions
How are fractions seperated
fractional distilation
What is natural gas
mixture of hydrocarbons in the gas state
Where does fractional distillation happen
fractionating column
Where is the column the hottest
the bottom
What is the order of the fractions
-gases
-Petrol
-Kerosene
-Diesel oil
-Fuel oil
Bitumen
What are gases used for
heating and cooking
What is petrol used for
fuel for car
What is Kerosene used for
fuel for aircraft
What is diesel oil used for
fuel for some cars and trains
What is fuel oil used for
fuel large ships and some power stations
What is bitumen used for
surfacing roads
What are alkanes
hydrocarbons that have a single convalent bond
What is a homologous series
family of molecules whoch have same general formula and share similar chemical proporties
Why do larger molecules have a higher boilling point
intermolecular
What catalyst is used for crackingr
powdered aluminium oxide
Describe the cracking process
vaporised hc passed over catalyst
What does craking break into
shorter alkane + alkene
What id the general formula for alkenes
CnH2n
