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Organic Chemistry - Alkenes

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Total cards: 6•Content version: v4•Public deck•Updated: 8/1/2026

Card preview (6)

#1
Front (Question)

what functional group do alkenes contain?

Back (Answer)

C=C

#2
Front (Question)

what do the names of alkenes end with?

Back (Answer)

“ene”

#3
Front (Question)

what is the general formula for alkenes?

Back (Answer)

CₙH₂ₙ

#4
Front (Question)

what type of hydrocarbons are alkenes?

Back (Answer)

unsaturated as they have a double bond

#5
Front (Question)

what is the reaction between alkenes and bromine?

Back (Answer)

• alkenes react with bromine water. UV light is not required for this reaction • the double bond is broken and the bromine atoms are added (addition reaction) • during this reaction there is a colour change from orange to colourless

#6
Front (Question)

how is bromine water used to distinguish between an alkane and an alkene?

Back (Answer)

• in the absence of UV light an alkane added to bromine water will not react: the bromine water will stay orange • however, alkenes react with bromine water even without UV light. there will be a colour change of orange to colourless.