Determining the nuclear products formed when given nuclei undergo either alpha or beta decay. Indicating which radioactive particle is involved. Discussion about nuclear decay and 1/2 life. Introduce Nuclear fission. Outline the reaction which occurs when uranium 235 is bombarded with a Neutron. Discuss a chain. reaction. View an image of the uranium 235 chain reaction and discuss the products formed and the release of neutrons from the reaction. Indicate the chain reaction will result in an atomic explosion and discuss reasons why a minimum amount of reactant material will not result in an explosive reaction.