Metaphysic rules are used in chemistry as you take one property, and change it into another. That in a nutshell is affinity, or the moment of like attracting like and dislike to occur an action. Take for example; one hydrogen atom and two oxygen atoms, result water. It occurs, through the use of the valence shell, combining into two excited hydrogen atoms, to result in H2O or water through affinity. The world of chemistry, or alchemy as it used to be called, is full of such affinitive moments by chemical attraction.