1. Which one describes not about a nuclear reaction but about a
chemical reaction?
Protons, neutrons, electrons, and other elementary particles may
be involved.
Rates of reaction normally are not affected by temperature,
pressure, and catalysts.
Only electrons in atomic or molecular orbitals are involved in
the breaking and forming of bonds.
Elements are converted from one to another.
2. If 12% of the original amount of a certain radioactive
isotope is left after 5.2 years of its radioactive decay,...