FullMetal Alchemist: Alchemy Type...

Yep I knew that is how he did it, cause he said so to someone....forgot who and plus alchemy is chemistry.

 

well sometimes i see him rubbing his two finger together and snap but when its in dark days like cloudy he can't a moisterization like that he can't make fire

 

True but in the manga when he fought Lust he carved his transmutation circle on the top of his hand and then used a lighter to create his flame.

 

yea saw that part but i'm curious how he cure his wound i forgot he said he pass out 3x or so he use fire?

 

I'd pick the alchemy of........ well, alchemy. Break the protons, neutrons, and electrons apart and form compounds out of the oxygen in the air. Heck, you could make a hydrogen bomb if alchemy was capable of that!