Alkenes Flashcards
1
Q
Alkenes are a homologous series of unsaturated hydrocarbons, which have:
The same functional group - at least one carbon-carbon ……….. bond / C=C
The same general formula - …………
Similar chemical properties
Differ in their chemical formula by one -……….- group
Have gradually changing ……………..properties
A
double
CnH2n
CH2
physical
2
Q
Alkynes contain at least one
A
carbon-carbon triple bond
3
Q
alkene shape
A
trigonal planar (bond angle = 120 o).
4
Q
Where do alkenes come from?
A
Cracking of long-chain hydrocarbons
Chemical reactions such as the elimination reaction of a halogenoalkane to form an alkene.
5
Q
Names of first 5 alkene
A
ethene
propene
butane
pentene
hexene
6
Q
A
