Atom splittings refer to the occurrence of breaking apart an atom into smaller particles through nuclear reactions. However, this term may also be referred to as fission or nuclear division. Fission occurs when a massive nucleus of an atom is split into two lighter nuclei through nuclear reactions. Other terms used to describe atom splittings include nuclear disintegration, nuclear decay, and radioactivity. These terms are often used interchangeably to describe the process of breaking apart the atom's nucleus. Atom splittings are not only essential in nuclear power generation but also have significant applications in scientific research, particle physics, and medical diagnosis and treatment.