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WITCHCRAFT!
(loot.buckodr.ink)
Be sure to follow the rule before you head out.
Rule: You must post before you leave.
It's not like the matter stops existing, it just stops being that specific element.
In the case of uranium, natural decay is mostly alpha radiation, meaning that 2 neutrons and two protons are ejected as a (high energy) helium nucleus, while the parent atom becomes thorium with an atomic weight four lower (e.g. U-238—>Th-234).