What is Nuclear chain-reaction?
A '''nuclear chain reaction''' is a [[nuclear reaction]] in which a heavy [[isotope]] atom such as [[uranium]] or [[plutonium]] splits and the [[neutron]]s released by the [[Nuclear fission|fissioning]] of that [[atom]] strike and split other heavy atoms which, as a result, hit others one after another after another. Chain reactions are the main way of getting [[nuclear energy]]. [[Power plant]]s use a slow chain reaction to make steam. Fast reactions can make a [[nuclear explosion]]. Nuclear reactions make [[ionizing radiation]] that is harmful to life. {{physics-stub}} [[Category:Nuclear physics]]