What is an example of nuclear reaction?

Answer 1

A nuclear change -- involves changes in nuclear structure, such as fission (splitting) of a nucleus or an atom, or fusion (combining) of neutrons and protons to form heavier atoms. This involves about 1,000,000 times as much energy as a chemical change. And also a nuclear reactor is a device to initiate and control a sustained nuclear chain reaction. The most common use of nuclear reactors is for the generation of electrical power (see Nuclear power) and for the power in some ships (see nuclear marine propulsion). This is usually accomplished by methods that involve using heat from the nuclear reaction to power steam turbines. There are also other less common uses as discussed below. All nuclear reactors are devices designed to maintain a chain reactionproducing a steady flow of neutrons generated by the fission of heavy nuclei. They are, however, differentiated either by their purpose or by their design features. In terms of purpose, they are either research reactors or power reactors.

Answer 2

Two examples of nuclear change that are observed in every-day life;

1. The fission of uranium in nuclear reactors, this is happening in many countries and can be considered normal in countries like the US, where electricity from nuclear is widespread

2. Radon is formed during a very long radioactive chain starting with Uranium 238, and as it is an alpha emitter it is injurious if inhaled. The level of radon existing in various places depends on the type of rocks underlying the area. Radon is thought to be the second most cause of lung cancer after tobacco smoking.

Answer 3

An example of nuclear fission might be a nuclear weapon. In this device, sub-critical masses of fissionable material are driven together by conventional explosives. This "assembles" a critical mass, and a chain reaction will follow. That is a nuclear fission chain reaction. In another example, a nuclear reactor has its control rods pulled and achieves criticality. It is brought to operating temperature and generates heat to make steam and drive turbines. The reactor operates on the principle of nuclear fission.

Answer 4

Nuclear transformation is what happens to unstable atom nuclei in while striving to reach stability. The nucleus of any element atom should have specific neutron/proton ratio to be a stable nucleus. In addition, the absolute number of protons should not exceed certain limit.

For a nucleus with neutron/proton is higher than the stability ratio, two nuclear transformations may occur to decrease the ratio in the nucleus in order to reach stability:

• neutron transformation to proton plus electron where the proton remains in the nucleus and the electron is emitted from the nucleus as beta radiation

• emitting neutron from the nucleus as neutron radiation (this transformation is relatively rare. Example of this transformation is the unstable Krypton-87)

For a nucleus with neutron/proton is lower than the stability ratio, two nuclear transformations may occur to increase the ratio in the nucleus in order to reach stability:

• proton transformation to neutron plus positron where the neutron remains in the nucleus and the positron is emitted from the nucleus as positive beta radiation

• proton attraction of one electron from the nearest orbit to the nucleus to form neutron that remains in the nucleus.

For an unstable nucleus with with number of protons exceeding the stability limit, it may reach stability with one or more of the above four nuclear transformations or by:

• fission of the nucleus into two or more smaller nuclei with emission of one or more neutrons (as the spontaneous fission of one of the plutonium isotopes).

The above are five examples of nuclear transformation.
Nuclear transformation is what happens to unstable atom nuclei in its efforts striving to reach stability. The nucleus of any element atom should have specific neutron/proton ratio to be stable nucleus. Also, the absolute number of protons should not exceed certain limit.

For a nucleus with neutron/proton is higher than the stability ratio, two nuclear transformations may occur to decrease the ratio in the nucleus in order to reach stability:

• neutron transformation to proton plus electron where the proton remains in the nucleus and the electron is emitted from the nucleus as beta radiation

• emitting neutron from the nucleus as neutron radiation (this transformation is relatively rare. Example of this transformation is the unstable Krypton-87)

For a nucleus with neutron/proton is lower than the stability ratio, two nuclear transformations may occur to increase the ratio in the nucleus in order to reach stability:

• proton transformation to neutron plus positron where the neutron remains in the nucleus and the positron is emitted from the nucleus as positive beta radiation

• proton attraction of one electron from the nearest orbit to the nucleus to form neutron that remains in the nucleus.

For an unstable nucleus with with number of protons exceeding the stability limit, it may reach stability with one or more of the above four nuclear transformations or by:

• fission of the nucleus into two or more smaller nuclei with emission of one or more neutrons (as the spontaneous fission of one of the plutonium isotopes).

The above are five examples of nuclear transformation.

Answer 5

An example of a nuclear change is the nuclear decay of uranium-238 to form thorium-234 and heat.

Answer 6

The combining of two hydrogen molecules it forms Helium

Answer 7

1. nuclear fission
2. nuclear fusion
3. nuclear decay

Answer 8

Nagasaki