love is not a chemical; love is CAUSED by chemistry. don’t confuse a mechanism with a concept.
logic of course also has a mechanism. it’s parts of your brain working through logarythms, matrices, etc, which most likely is done as a physical process.
but that is not what seems to be intended when logic is called an object, or “asbtract object”.
as said, the word “object” can have more meanings that just a physical, tangible, cohesive collection of matter. but i’m not sure it actually works for logic. logic is purely a process, not a thing of itself.