CH1012
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HYDROCARBONS
Alkanes: one word             R1-R2 
a) alkyl side chain = R2   prefix
b) long-alkyl root = R1   suffix -ane
e.g CH3CH(CH3)CH3    Þ      2-methylpropane
Alkenes: one word R(R2)C=CHR
a) alkyl side chain = R2 prefix
b) long-alkyl root =   R-C=C-R       suffix -ene
e.g CH3C(CH3)=CHCH3  Þ 2-methyl-2-butene
Alkynes: one word                 RCºCR
e.g CH3CH2CH2CºCH    Þ               1-pentyne