how does nuclear fision work?

Nuclear fission is a process that uses energy to split atoms into smaller pieces. Atoms are made up of tiny particles called protons and neutrons that are held together by a strong force. In nuclear fission, these particles are split apart, releasing energy in the form of heat and radiation. This energy can be used to make electricity, among other things. When the atom splits, it releases more particles, which then split other atoms and the process starts all over again, releasing more and more energy.