Discuss artificial radioactivity produced by isotopes bombarded by either alpha, beta, protons or neutrons.
Introduce nuclear fission by discussing the early history of atomic nuclear division. Define nuclear fission by using examples of nuclear isotopes dividing into 2 new elements. Present the division using images depicting the nuclei splitting into two new nuclei. Introduce how the nucleus elongates and the strong nuclear force becomes weakened and the electromagnetic force of repulsion is strong enough to "split" the nuclei. Write the general expression for uranium fission to form barium and krypton with the release of energy.