Question

 Differentiate between nuclear fission and nuclear fusion. 

Answer 1

	Nuclear fission	Nuclear fusion
Definition	Fission is the splitting of the heavy nucleus of a radioactive atom into smaller nuclei.	Fusion is the fusing of two or more lighter nuclei into a heavy nucleus.
Natural occurrence of the process	The process of nuclear fission does not normally occur in nature.	Fusion occurs in stars, such as the sun.
Energy released	The energy released by fission is a million times greater than that released in chemical reactions but is lower than the energy released by nuclear fusion.	The energy released by fusion is three to four times greater than the energy released by fission.

Answer 2

	Nuclear fission	Nuclear fusion
1.	When a heavy nucleus is agitated, it splits into two smaller nuclei with comparable masses.	Two lighter nuclei fuse together to create a heavier nucleus.
2.	This phenomenon does not require high temperatures or pressures to occur.	This phenomenon requires tremendous pressure and temperature conditions to occur.
3.	Neutrons are the link particles.	Protons are the link particles.