F5C6: Radioactivity Flashcards
1
Q
radioactivity
A
spontaneous disintegration of an unstable nucleus into a more stable nucleus with the emission of energetic particles or protons
2
Q
radioisotope
A
unstable isotope
3
Q
half life
A
time taken for a sample of a radioactive nuclei to decay to half its original value
4
Q
nuclear fission
A
nuclear reaction when the splitting of a heavy nucleus into 2 or more lighter nuclei with the release of energy
5
Q
nuclear fusion
A
nuclear reaction in which small and light nuclei fuse to form a heavier nucleus while releasing a large amount of energy
