|A molecule of ____ contains one or two atoms of deuterium.
|To change atoms of an element into another element is ____.
|The ____ of two hydrogen atoms produces a helium atom.
|A C-14 atom emits ____ as it decays into a stable N-14 atom.
|Since a gamma ray has no charge, it is not affected by an ____.
|A particle accelerator cannot increase the ____ of neutrons.
|Half-life depends on ____ (not temperature or volume).
|Potassium-40 and uranium-238 are used to date ____ fossils.