Radioactivity

4. The general name of the particles given off in the process of radioactivity.
5. The process where particles are released from certain atoms.
8. A type of radiation. Is a Helium nucleus; ⁴He. It has a positive charge. It has the lowest penetrating ability.
9. The process where an unstable nucleus releases its energy by emitting radiation
10. The French scientist who first discovered radioactivity.

1. A type of radiation. Is a stream of electrons; e⁻¹. It has a negative charge. It has medium penetrating ability.
2. A type of radiation. It is a high energy photon with the symbol; γ. It has no charge and has the greatest penetrating ability.
3. Also called the Belt of Stability. When the number of protons of an isotope are graphed against the number of neutrons, the stable isotopes form a noticeable band across the graph. This is where the ratio of protons to neutrons is just right to form a stable atom.
4. The general name for any of the types of elements that give off radiation.
6. Curie A Polish/French team that did much of the ground breaking work in the field of Radioactivity. They discovered Radium and Polonium.
7. The force found in the nucleus that helps keep all the positive charges found in the protons in the nucleus from flying apart.