alkenes
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what are alkenes
unsaturated hydrocarbons
general formula
CnH2n
all alkenes have what type of bond
a double carbon bond
the double carbon bond means
alkenes can react in ways that alkanes can’t
first 4
ethene propene but-1-ene pent-1-ene
how can unsaturated carbons make more bonds
by opening up the C=C bond and allowing incoming atoms to form another single bond with each carbon atom of the functional group
are they more reactive than alkanes
much more
why are they more reactive than alkanes
as the double bond can break and let new atoms attach
bromination of alkenes is when
alkenes undergo addition reactions where the bromine atoms add across the double carbon bonds forming dibromoalkane
when bromine is added with an alkene,
dibromoalkane is formed
bromination of alkenes also works with
any halogen and alkene in which the halogen atoms add to the carbon atoms across the C=C bond
when testing for alkenes, why is bromine water used instead of bromine
its safer
what colour is bromine water
orange
when bromine water is added to n alkane, what happens
it remains orange as alkanes don’t have double bonds, so bromine remains in the solution
when bromine water is added to alkenes, what happens
the bromine bonds add across a C=C bond, so solution decolourises