Saved Bookmarks
| 1. |
Question) What is difference between nucley fission and fusion ? |
| Answer» Nuclear fission:1) Fission is the splitting of a large atom into two or more smaller ones.2) Fission produces many highly radioactive particles.3) Fission reaction does not normally occur in nature.4) Critical mass of the substance and high-speed neutrons are required.5) Takes little energy to split two atoms in a fission reaction.6) The energy released by fission is a million times greater than that released in chemical reactions, but lower than the energy released by nuclear fusion.Nuclear fusion:1) Fusion is the fusing of two or more lighter atoms into a larger one.2) Few radioactive particles are produced by fusion reaction, but if a fission "trigger" is used, radioactive particles will result from that.3) Fusion occurs in stars, such as the sun.4)High density, high temperature environment is required.5) Extremely high energy is required to bring two or more protons close enough that nuclear forces overcome their electrostatic repulsion.6) The energy released by fusion is three to four times greater than the energy released by fission\xa0 | |