U2 P1 - systematic carbon chemistry Flashcards
1
Q
alkanes
A
come from natural gas/fractional distillation of crude oil
saturated (contain only single C-C bonds)
2
Q
alkenes
A
unsaturated (contain at least one C=C bond)
3
Q
saturated compounds
A
do not decolorise bromine solution
4
Q
unsaturated compounds
A
decolourise bromine solution
5
Q
isomer
A
compounds with the same molecular formula but different structural formulae
6
Q
addition reactions
A
when the C=C double bond breaks and the other reactant adds across the double bond
7
Q
addition of halogens
A
when bromine water is added to an unsaturated molecule (alkene), it becomes colourless
ethene + bromine —> dibromoethane
8
Q
addition of hydrogen (hydrogenation)
A
alkene + hydrogen —> alkane
9
Q
addition of water (hydration)
A
alkene + water —> alcohol
