Imagine a world in which all the elements
existed, but they couldn't form any
chemical bonds with each other. what
kinds of substances could exist in such a
world? what kinds of substances could not
exist? what do you think this world would
be like?

 If the element fail to form bonds between them you and I wouldn't exist all the living forms are made up of complex organic molecules which are synthesized from inorganic sources starting from the fabric we wear to the food we eat everything is made up of complex organic molecules life wouldn't have originated on earth if elements wouldn't have formed any chemical bonds with each other.

not sure if this is what you'r looking for eubacteria and archaebacteria

carbon atoms, hydrogen, oxygen, and nitrogen.