4242568
Description
Mind Map by Grace Bovaird, updated more than 1 year ago
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Created by Grace Bovaird
about 9 years ago
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Fuels
- Fossil Fuels
- Finite Resource
- Examples: oil,
coal, peat and
natural gas
- Hydrocarbons with
minor impurities
- Formation
- Coal and peat; dead plants
fell into swamps and didn't
rot. They were buried
deeper over thousands of
years until eventually peat
formed
- Crude oil and natural gas;
Tiny dead sea creatures didn't
rot at the bottom of the sea
and they were buried deeper
over thousands of years until
eventually oil and gas were
formed
- Energy from the sun is captured
in chemical bonds through
processes such as photosynthesis
and respiration
- Coal and peat; dead plants
fell into swamps and didn't
rot. They were buried
deeper over thousands of
years until eventually peat
formed
- Finite Resource
- Combustion releases the
energy when the fuels
burned
- Complete
combustion products
are water (H2O) and
Carbon Dioxide (CO2)
- Eh=cm/_\T
- Eh - Kj (heat energy)
- c - specific heat capacity
of water (4.18 KJkg-1oC-1)
- m - mass of water in kg (1ml=1g)
- /_\T - the change in temperature of the water
- Eh - Kj (heat energy)
- Fractional Distillation
- a fraction is a
group of
hydrocarbons with
a boiling point
within a certain
range
- Viscosity - lighter
fractions are runnier than
heavier ones
- The way in which
crude oil is refined
- Flammability - lighter
fractions have a higher
flammability
- a fraction is a
group of
hydrocarbons with
a boiling point
within a certain
range
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