difference between nuclear fission and fusion pdf

Difference Between Nuclear Fission And Fusion Pdf

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The energy harnessed in nuclei is released in nuclear reactions. Fission is the splitting of a heavy nucleus into lighter nuclei and fusion is the combining of nuclei to form a bigger and heavier nucleus.

Nuclear fusion takes place naturally, such as in stars like the sun. They are listed below for comparison purposes. On the other hand, nuclear fission reaction does not happen naturally.

Fission and Fusion: What is the Difference?

Nuclear fusion is a reaction in which two or more atomic nuclei are combined to form one or more different atomic nuclei and subatomic particles neutrons or protons. The difference in mass between the reactants and products is manifested as either the release or the absorption of energy. This difference in mass arises due to the difference in atomic binding energy between the nuclei before and after the reaction. Fusion is the process that powers active or main sequence stars and other high-magnitude stars, where large amounts of energy are released. A fusion process that produces nuclei lighter than iron or nickel will generally release energy. These elements have relatively small mass per nucleon and large binding energy per nucleon. Fusion of nuclei lighter than these releases energy an exothermic process , while fusion of heavier nuclei results in energy retained by the product nucleons, and the resulting reaction is endothermic.

A physical reaction that causes a change in the nucleus of an atom is called a nuclear reaction and the energy released during this reaction is called nuclear energy. The mass of nucleus serves as the source of nuclear energy which is released mainly in the form of heat. There are two types of nuclear reaction. They are:. The heavy nucleus of radioactive atoms like uranium, plutonium, or thorium is bombarded with low-energy neutrons which split the nucleus into smaller nuclei. This process is called nuclear fission.

Fission and Fusion: What is the Difference?

Fission occurs when a neutron slams into a larger atom, forcing it to excite and spilt into two smaller atoms—also known as fission products. Additional neutrons are also released that can initiate a chain reaction. Uranium and plutonium are most commonly used for fission reactions in nuclear power reactors because they are easy to initiate and control. The energy released by fission in these reactors heats water into steam. The steam is used to spin a turbine to produce carbon-free electricity.

In both fusion and fission, nuclear processes alter atoms to generate energy. Despite having some things in common, the two can be considered polar opposites. Nuclear fission is the exact opposite process whereby a heavier atom is split into two lighter ones. This deceivingly simple equation can be found everywhere, even in pop culture. Millions of people recognize it and can write it down by heart even though they might not understand anything about the physics involved. Join the ZME newsletter for amazing science news, features, and exclusive scoops. More than 40, subscribers can't be wrong.

Nuclear fusion and nuclear fission are two different types of energy-releasing reactions in which energy is released from high-powered atomic bonds between the particles within the nucleus. The main difference between these two processes is that fission is the splitting of an atom into two or more smaller ones while fusion is the fusing of two or more smaller atoms into a larger one. Fission is the splitting of a large atom into two or more smaller ones. Fusion is the fusing of two or more lighter atoms into a larger one. Fission reaction does not normally occur in nature. Fusion occurs in stars, such as the sun. Fission produces many highly radioactive particles.


Nuclear fission and fusion involve the disintegration and combination of the elemental nucleus. In the case of nuclear fission, an atom divides into two or smaller or.


What is the difference between nuclear fission and nuclear fusion?

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3 Comments

  1. Somer L.

    Nuclear fusion and nuclear fission are different types of reactions that release energy due to the presence of high-powered atomic bonds between particles found within a nucleus.

    28.03.2021 at 18:52 Reply
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