| All carbon isotopes (e.g. C-12 and C-14) have ____ protons. |
6 |
| C-12 is a stable isotope, whereas C-14 is a ____ isotope. |
archaeological |
| Nuclei ____ during nuclear fusion reactions. |
gamma |
| Carbon-14 is used to date organic ____ samples. |
heavier |
| C-14 is a natural isotope used for ____ dating. |
join together |
| Nuclei ____ during nuclear fission reactions. |
radioactive |
| Tritium (two neutrons) is ____ than deuterium (one neutron). |
radiocarbon |
| A ____ ray is a photon emitted by a radioactive substance. |
split apart |
