Let's say a molecule of hydrogen ends up in a blast furnace. It breaks into atoms, which then might combine with oxygen or some other element. What killed it? a. Internal vibration shook it apart. b. Another molecule smacked it right between the atoms and cleaved it. c. It absorbed a photon emitted by another atom, which increased its energy level or ionized it, and then I don't know what happens. I know that ionized molecules can still hold together, but I don't know the limit of that. d. All of the above[, and more]. How frequent would each process be? My understanding of how bonds work is... improving. This is part of my attempt to understand them.