|An awesome pentacle|
Earth -- solids
Water -- liquids
Air -- gases
Fire -- it starts with a ph, but I can't remember what it's called!
Spirit -- what science can't (yet) detect
Of course these don't replace the periodic table, but I run with it because it's what (according to some, including myself) that five points of the pentacle represent, and it's just what makes sense to me. Also, I don't see one worldview as excluding the other. Rather, I think that the two ideas can coexist quite happily, one being the scientific way of looking at the world, the other being a spiritual way of looking at the world.
Do you think of the elements as being earth, air, fire, water, and spirit? Do you think of them as being some other combination? Or do you stick to the periodic table? I am curious to hear what others think. :)