sup physicsforums, chem guy here, not sure whether I want to do a minor in physics or maths. I'm mostly interested in physics for the QM part (pchem was fairly unremarkable, lots of unproven formulae etc.), but I doubt I'd have enough credit points left to get the necessary math (PDEs, complex variable etc.) background as well as the QM and experimental units. Those final year labs look really nice though - from my experiences with chem, I'm perfectly fine with 6 (or 12) hour labs, huge reports, error analysis and following the train of references. Pure maths is pretty cool, although so far I've only seen some basic real analysis and group theory, It seems like it would be a better overarching learning experience - but then I wouldn't get to screw around in the labs :(. And anyway, it doesn't cover too much stuff relevant to what I want to do, and I know it's in a whole different league compared to science - but it's still interesting. At face value applied maths seems like the obvious choice, but the only part I really care about enough to learn is PDEs.