Question

The energy released by a nuclear reaction results primarily from the
(1) breaking of bonds between atoms
(2) formation of bonds between atoms
(3) conversion of mass into energy
(4) conversion of energy into mass

Answer 1

Conversion of mass into energy. When an atom is split, the mass will be slightly less, and this weight difference will be converted into energy. I hope that helps!

Answer 2

Answer:

Conversion of mass into energy

Explanation:

In chemical reactions, the mass is conserved. In chemical reaction the matter cannot be created nor be destroyed.

While in nuclear reaction, the mass is not conserved. The mass gets converted to energy.

The relation is : E= mc²

Thus in nuclear reactions tremendous amount of energy is released.

In both fission and fusion reactions mass gets converted to energy.