what makes the radioactive dacay of uranium or the fusion of two hydrogen atoms different from a chemical?

Question

How Did the Grand Canyon Develop? what is the geological history represented there?

and one more ?

Explain the history of pure quartz sanstone?

Answer 1

"Dacay" of uranium and fusion of hydrogen are called "nuclear" reactions. They are different from chemical reactions. In nuclear reactions, the mass of the particles after the reaction is always less than the mass of the particles before. The difference in mass is converted to energy in accordance with E=mc^2.

In chemical reactions, the mass of the particles is the same before and after the reaction.