Record number on chart. Replace "decayed atoms" with paper ... What do the curves suggest about the rate of radioactive decay in general? Groups can challenge each other to determine the "age ...

The radiation emitted from unstable nuclei is called ... and is also sometimes written as \(_{2}^{4}\alpha\). Alpha decay causes the mass number of the nucleus to decrease by four and the atomic ...

All types of radioactive decay can be detected by a Geiger-Muller tube, or G-M tube. The radiations ionise the gas inside the G-M tube and the resulting charged particles move across the chamber ...