Klik foto untuk lebih jelasUses of petroleum
Petroleum, natural gas, coal and wood are natural fuel resources found in the Earth’s crust which are non-renewable
Petroleum is usually obtained together with natural gas
Petroleum can be separated to several fraction by distillation
The higher the boiling point of the fraction
(a) the darker its colour
(b) the higher its viscosity
(c) the harder it is to burn
(d) produced more soot in flame
All petroleum fractions do not dissolve in water
Natural gas can be stored under high pressure
in tanks for easy storage and transport
About 90% of natural gas is methane while the balance is made up of hydrocarbons such as ethane, butane and propane
Coal is a black solid that contains mainly carbon and small amounts of hydrogen, oxygen, nitrogen and sulphur
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