Well you kind of have biological (life) sciences at one end of the spectrum and physics at the other, with chemistry occupying the area in between (which doesn't always work, either, because you also have biophysics which doesn't have a lot of chemistry involved, so it's more like a triangle). But typically chemistry and physics are considered the physical sciences in college curricula and biology (and biological sciences) is given its own category, although there is a gray area which includes biochemistry. Physical sciences I guess could be defined as those sciences which are based on physical laws of nonliving systems - and physics and chemistry fit that definition.Gaidal Cain wrote:Maybe my english knowledge is as fault here, but wouldn't chemistry as well be excluded from "physical sciences", or has those words some meaning radically different from just "physics"?
For a more rigorous definition: http://en.wikipedia.org/wiki/Physical_sciences