C1 - topic 5 - alkanes and alkenes Flashcards
Alkanes are all made up of what?
chains of carbon atoms with single bonds between them
Carbon atoms with single bonds between them are called what?
saturated hydrocarbons
why are carbon atoms with single bonds called saturated hydrocarbons?
because they have no spare bonds
why don’t Alkanes turn bromine water colourless?
because there are no spare bonds
why don’t Alkanes form polymers?
because there are no spare bonds
what are the first three Alkanes?
methane
ethane
propane
monkeys
eat
potatoes
what is the formula for methane?
CH(4)
what is the formula for ethane?
C(2)H(6)
what is the formula for propane?
C(3)H(8)
alkenes have what?
single bonds
what are alkenes?
chains of carbon atoms that have one or more double bonds
what are alkenes called?
unsaturated hydrocarbons
why are alkenes called unsaturated hydrocarbons?
because they have spare bonds
will alkenes decolourise bromine water? why?
yes because they form bonds with the bromine atoms
how do alkenes form polymers?
by opening up their double bonds to connect in a long chain
what are the first two alkenes?
ethane and propene
what is the formula for ethene?
C(2)H(4)
what is the formula for propene?
C(3)H(6)
what does “meth” mean?
one carbon atom
what does “eth” mean?
two carbon atoms
what does “prop” mean?
three Carbon atoms
what is the only difference between the name of an alkene and alkane?
the ending of their names - “ene” and “ane”
what do all Alkanes have?
single bonds
