Before revision: While physics focuses on phenomena such as force, motion, electromagnetism, elementary particles, and spacetime, chemistry is concerned mainly with the structure and reactions of atoms, molecules, and ions , but does not necessarily deal with non-baryonic matter.
After revision: While physics focuses on phenomena such as force, motion, electromagnetism, elementary particles, and spacetime, chemistry is concerned mainly with the structure and reactions of atoms, and molecules , but does not necessarily deal with non-baryonic matter.