Patterns: Observing patterns in the stability of isotopes and radioactive decay series. (Example: Practice determining the differing number of neutrons in isotopes of the same element.) Cause and ...

In 1902 Ernest Rutherford and Frederick Soddy discovered that radioactive elements, such as uranium and thorium, broke down into other elements in a predictable sequence or series. This amazing ...

Certain isotopes are unstable and undergo a process of radioactive decay, slowly and steadily transforming, molecule by molecule, into a different isotope. This rate of decay is constant for a ...

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 ...

Spent sources, which can no longer be used for their intended purposes as a result of radioactive decay, are a sub-set of disused sources. If lost or not properly controlled, disused sealed sources ...

Beryllium-10 undergoes radioactive decay really slowly, meaning it gradually breaks down over millions of years as it sits in the rocks. As beryllium-10 decays over time, its concentration ...

The core of this innovative battery is carbon-14, a radioactive isotope ... a process we call beta decay. This is essentially where the carbon-14 releases a series of electrons.

The half life of a radioactive isotope is the time taken for it to decay to half of its original amount of radioactivity. The specific activity is the activity per unit mass of a particular ...

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 ...