I think sometimes people forget that when we think of "chemistry", we're talking about an approximation based on behavior that ultimately emerges from quantum e

I think sometimes people forget that when we think of "chemistry", we're talking about an approximation based on behavior that ultimately emerges from quantum effects. It's just that you don't often need to model the full wavefunction to talk about an iron atom's ionization state in that cuvette where you're testing your pool water. We don't see a lot of macro-scale quantum weirdness because big and warm directly implies vast amounts of interaction - decoherence.