What are these organic molecules names? You have to use FULL nomenclature.
1) H3C – CH – CH3
---------------I
-------------CH3
2) H3C – CH – CH – CH3
---------------I--------I
-------------CH3---CH3
3) H3C – CH2 – CH2 – CH2 – CH3
4) H3C – CH = CH – CH – CH3
------------------CH3
-------------------I
5) H3C – C = C – CH3
--------------I
------------CH3
-------------------CH3
--------------------I
6) H2C = CH – C – CH3 – CH3
----------------------I
--------------------CH3
7) H3C – CH – CH2 – CH2 – CH2 – CH2 – Br
---------------I
------------CH3
-----------------------Cl
------------------------I
8) H3C – CH2 – CH – CH2 –CH3
9) H3C – CH2 – I
1) H3C – CH – CH3
---------------I
-------------CH3
I would name this 2-methylpropane.
2) H3C – CH – CH – CH3
---------------I--------I
-------------CH3---CH3
I would name this as 2,3-dimethylbutane
3) H3C – CH2 – CH2 – CH2 – CH3
I would name this as pentane or n-pentane
4) H3C – CH = CH – CH – CH3
------------------CH3
-------------------I
I assume this is H3C-CH=CH-CH(CH3)-CH3 which I would name as
4-methyl-2-pentene
5) H3C – C = C – CH3
--------------I
------------CH3
-------------------CH3
--------------------I
I assume this is H3C-C(CH3)=C(CH3)-CH3 which I would name as
2,3-dimethyl-2-butene
6) H2C = CH – C – CH3 – CH3
----------------------I
--------------------CH3
I assume you meant (adding a H to carbon 3 and removing a H from carbon 4) H2C=CH-CH(CH3)-CH2-CH3 and I would name it as
3-methyl-1-pentene
7) H3C – CH – CH2 – CH2 – CH2 – CH2 – Br
---------------I
------------CH3
-----------------------Cl
------------------------I
I can't tell where the Cl is attached. Assuming we remove a H from carbon 3 from the left and attach the Cl there it would look like this.
H3C-CH(CH3)-CH(Cl)-CH2-CH2-CH2Br which I would name as
1-bromo-4-chloro-5-methylhexane.
8) H3C – CH2 – CH – CH2 –CH3
9) H3C – CH2 – I
I would name this iodoethane
It's been a loooonnnng time since I've tried to name an oranic compound by IUPAC rules (and IUPAC rules hava changed since I was in school--the latest change was in 1995, I think, so take these names for what they are worth. Good luck.