View and discuss an introduction into radioactivity and radioactive decay.Define both with examples. Discuss Rutherford's early work which resulted in the discovery of 3 different kinds of radiation, alpha, beta, and gamma rays. Indicate the symbols for each and the penetrating power of each. Start with alpha decay, what an alpha particle is, how to symbolize it for reactions, and the general formula for determining the isotope formed when a substance emits an alpha particle. Use a few examples to reinforce the concept.