  A quantum Matter-Photonics framework is adapted to help scrutinize chemical
reaction mechanisms and used to explore a process mapped from chemical tree
topological model. The chemical concept of bond knitting/breaking is
reformulated via partitioned base sets leading to an abstract and general
quantum presentation. Pivotal roles are assigned to entanglement,
coherence,de-coherence and Feshbach resonance quantum states that permit
apprehend gating states in conversion processes. A view from above in the state
energy eigenvalue ladder, belonging to full system spectra complement the
standard view from ground state. A full quantum physical view supporting
chemical change obtains.
