I believe it is organic chemistry. We just studied that in science. Don't rely on this answer as I don't have my science book with me and I am trying to pull this out of my head.
it is called microbiology
Most of them are called the group of INorganiccompounds.
it's called a element according to study island
diamondgraphitecharcoal
diamond
AldehydesKetonesCarboxylic acidsAlcohols
Because Diamond is an allotrope of carbon - diamonds are purely made out of carbon.
The answer is organic chemistry
If a substance is made out of one chemical it is called a Element.
basically there is no common substance from which everything is made.. if ur question is changed to " what are most of the things made of.." then its carbon.
Inorganic compunds
OMG LOADS what about H2O, LiCl, CaO, H2SO4... they're called inorganic subtances