2007-02-09 21:36:14 · 3 answers · asked by sanjeeva 1 in Science & Mathematics ➔ Physics
Nuclear fission is the process by which one heavy nucleus splits into two medium weight nuclei.
Nuclear fusion is the process in which two nuclei combine to form a single nucleus.
2007-02-09 21:45:07 · answer #1 · answered by Chigorin 2 · 0⤊ 0⤋
They are nuclear reactions. Nuclear Reactions are reactions which involve only the nucleus. The Nuclear Reactions is different from a chemical reaction, which involves only the orbital electrons.
Nuclear Fission is a nuclear reaction in which the nucleus of an atom breaks into fragments when it collides with a neutron. The fragments are called fission fragments.
Nuclear Fusion is a nuclear reaction in which two nuclei combine to form a new nucleus.
In both the processes a large amount of energy is liberated. The energy liberated much more greater than the combustion of 200 million tonnes of coal.
2007-02-09 22:06:02 · answer #2 · answered by neel000_ind 1 · 0⤊ 0⤋
when two small nuclei combines to form a large nucleus,it is called fusion reaction. if one nucleus is hit by a projectile like proton, electron etc, it splits to form two different nuclei, it is called fission reaction.
both release a large amount of energy.
fission is more useful as it can be controlled
2007-02-09 21:50:03 · answer #3 · answered by Anonymous · 0⤊ 0⤋