Question

what type of substance is always made up of a single type of atom?

Answer 1

probably nothing.. the thing with only one type of atom is its molecule/element itself..

cause, when you try to bond its own atom to a molecule/atom it wont accept due to lack of its tendency, until you apply any external forcess...

like...

after marrying a girl , you cant marry her sister too, because they are both alike... and you got only one life to get screwed up. u can't marry her sis unless she is hot (universal external force)...