Radioactive decay is a spontaneous and random process. A block of radioactive material will contain many trillions of nuclei and not all nuclei are likely to decay at the same time so it is ...

It also means that the process of radioactive decay cannot be speeded up or slowed down by any physical changes such as a change of temperature or pressure. A random process means that scientists ...

and sugar cubes to simulate the radioactive decay of different isotopes. A radioactive isotope's nucleus is unstable and spontaneously decays, giving off radiation and changing into a different ...