Chem help!高手請答~~

1.carbon triple bond 係 alkynes 有, 不過不在 ce syllabuses
e.g ethyne (acetylene) CH≡CH
propyne CH3C≡CH
1-butyne CH3CH2C≡CH
2-butyne CH3C≡CCH3
2.Branched-chain alkanes 是相對 straight chain alkanes
Branched-chain alkanes 不是所有 carbon 在一條 chain
Straight-chain alkanes 是所有 carbon 在一條 chain
Branched-chain alkanes examples
2-methylpropane (CH3)2CHCH3
ＣＨ３－ＣＨ－ＣＨ３
　　　　｜
　　　　ＣＨ３
2-methylbutane (CH3)2CHCH2CH3
ＣＨ３－ＣＨ－ＣＨ２－ＣＨ３
　　　　｜
　　　　ＣＨ３
2,2-dimethylpropane C(CH3)4
　　　　ＣＨ３
　　　　｜
ＣＨ３－ＣＨ－ＣＨ３
　　　　｜
　　　　ＣＨ３
Straight-chain alkanes examples
methane CH4
ethane CH3CH3
propane CH3CH2CH3
butane CH3CH2CH2CH3
有bromo..chloro..個d alkanes 是 alkyl halides
examples
chloromethane CH3Cl
bromomethane CH3Br
chloroethane CH3CH2Cl
bromoethane CH3CH2Br
3.會考裡面Alkanes 同alkenes ge reaction
ce syllabuses
Reactions of alkanes:
(a)combustion,
(b)substitution reactions with chlorine and bromine.
Reactions of alkenes with:
(a)bromine,
(b)acidified potassium permanganate solution
I hope this can help your understanding. :)