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

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2
Q

Alkynes contain at least one

A

carbon-carbon triple bond

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3
Q

alkene shape

A

trigonal planar (bond angle = 120 o).

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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.

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5
Q

Names of first 5 alkene

A

ethene
propene
butane
pentene
hexene

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6
Q
A
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