how to write the structures of the hydrocarbon cumpounds?

Answer 1

Start with the number of carbons in a straight chain:

1 - methane
2-ethane
3-propoane
4-butane
5-petane
6-hexane
7-heptane
8-octane
9-noane
10-decane

End in -ene (instead of -ane) for a double bond

End in -yne for a triple bond.

Reference any non-hydrogen atoms or other groups by number of the carbon they are attached to. (left to right oriented so as to minimize the number.)

So 3-methyl, 5-dichloro nonane is

Editting to try to get the spacing right (yahoo has its own ideas)

C

C

C-CH3

C

Cl-C-Cl

C

C

C

C

(fill in enough hydrogens so all carbons have 4 bonds.)

Answer 2

I learned this last year, but all I can remember is that the triple bonded hydrocarbon is what they use to fuel blowtorches because it is so unstable and reactive. I know that isn't helping you, but it's an interesting little fact I suppose...

Answer 3

Well is a huge topic to discuss over a forum... Just go through some tutorials on IUPAC Nomenclature... once you get the trick its pretty EASY... :)