Cambridge IGCSE Physics · Syllabus 0625 · Nuclear Physics
Nuclear Fission
What is Nuclear Fission?
Nuclear fission is the splitting of a heavy nucleus, such as uranium-235 after it absorbs a neutron, into two lighter daughter nuclei together with two or more neutrons. The total mass of the products is slightly less than that of the reactants, and energy is released.
This definition is part of the Nuclear Physics chapter in Cambridge IGCSE Physics.