This is emission of an alpha particle which is a helium nucleus. Thus the atomic number decreases by two and the atomic weight by four, in such a radioactive decay
A nuclear reaction involves changes in the nucleus of an atom, and it is from the atomic nucleus that energy is released in a nuclear reaction.
Nuclear Fission
neutrons
Nuclear fission
Uranium-235
A nuclear reaction involves changes in the nucleus of an atom, and it is from the atomic nucleus that energy is released in a nuclear reaction.
To set off a fission reaction (the reaction that occurs in a nuclear reactor), a person must first pump a neutron into a heavy nucleus. So if a neutron is pumped into a uranium or plutonium nucleus capable of undergoing fission, the nucleus splits in two, and releases more neutrons, which hit more nuclei, which in turn send out even more neutrons, thus setting off a chain reaction where every time a neutron hits a nucleus, the nucleus splits in two and sends out more neutrons.
That is nuclear fission. An example is that of a Uranium-239 atom undergoing beta decay. That is, a neutron in the nucleus ejects and electron, becoming a proton, resulting in Uranium-239 becoming Neptunium-239.
Nuclear Fission
Yes, it is an adjective. It refers to a nucleus, as in nuclear reaction, or the central form, as in nuclear family.
The splitting of a nucleus atom
No, a nuclear bomb involves a nuclear chain-reaction.A chemical reaction involves the orbiting electrons in an atom.A nuclear reaction involves the nucleus (hence "Nuclear") of an atom.
In nuclear physics and nuclear chemistry, nuclear fission is a nuclear reaction in which the nucleus of an atom splits into smaller parts (lighter nuclei), often producing free neutrons and photons (in the form of gamma rays).
neutrons
Nuclear reactions change the composition of an atom's nucleus, hence nuclear reaction.
Nuclear fission
In a chain reaction, neutrons released during the splitting of an initial nucleus trigger a series of nuclear fissions.