I think is better to talk about disciplines rather than science or not-science.
Physics joint all disciplines, all of them relapse on physics sooner or later, then chemistry and, as a high specialized chemistry, biology are the three major disciplines. These three are the big science fields, because they use the scientific method. Engineering, geology even medical sciences and others are applications of the three big sciences, so they still are, but not by them self.
Mathematics does not seem like a science for me, it is the most amazing creation of human mind, mathematical modeling is the alphabet of science, but is in other dimension.
PS. sorry for my English expression skils