(1)
Some properties of hydrocarbons depend on the
of their molecules which is indicated by the number of
in the molecule.
(2) The
the molecule the higher its
(liquid ==> gas point), the greater its
('stickiness').
(3)
The
the molecule the lower the
, i.e. the more easily burning is initiated and the less sooty the flame.
(4) These properties influence how hydrocarbons are used as
and other uses.
(5) The
are gases or easily vaporised liquid hydrocarbon molecules used for
(gasoline) fuel.
(6)
Some of the larger hydrocarbon molecules are used as
, due to their high
where you want the liquid to stick to surfaces and where the last thing you want is
!
(7)
The
fraction is used as aircraft fuel.
(8) The
fraction is used as fuel for heavy goods vehicles and many cars too these days.
(9) The
fraction is used for central heating boilers.
(10) The
are low melting black solids and this '
' ('leftover') fraction is known as
, used for
.
(11) The
fraction has no direct use, but can be converted to lots of useful molecules.