What do you know about nuclear changes?

Answer 1

You are probably thinking of changes to a nucleus in nuclear reactions. This can be during radioactive decay, a nucleus emitting an alpha or beta particle is transmuted to another nucleus which defines it as a different element. Also during nuclear fission the nuclei of uranium or plutonium are split up and hence become other elements

Answer 2

Nuclear force is the residual strong force, so lets talk about the strong force first.

The strong force, also known as binding energy, holds quarks together to form protons and neutrons. It is an attractive force, and it is about 100 times more powerful than the electromagnetic force that is based on charge, said electromagnetic force being repulsive between quarks of like charge, and attractive between quarks of unlike charge.

There are several different kinds of quarks, but I'm only going to talk about two, the down quark, with a charge of -1/3, and the up quark, with a charge of +2/3.

Put two down quarks and one up quark together, and you get a neutron, with a net charge of zero. Put one down quark and two up quarks together, and you get a proton, with a net charge of +1.

Now, there is residual strong force, or residual binding energy, left over from holding the quarks together. We call it the nuclear force. Sometimes we also call it the residual binding energy.

This nuclear force goes on to hold neutrons and protons together in the nucleus of the atom. Even though it is "residual" it is still stronger than the electromagnetic force, so it overrides the tendency of the protons to repel each other.

The strong force, aka binding energy, aka nuclear force, is a function of distance, and its effect rapidly diminishes outside of the confines of the nucleus. In fact, it diminishes faster by distance than does the electromagnetic force. As a side note, that is why the electrons are attracted to the nucleus.

Within the nucleus, the nuclear force competes with the electromagnetic force. For small nuclei, the nuclear force wins. For larger nuclei, however, the electromagnetic force starts to win, destabilizing the nucleus. Even among the smaller nuclei, it is believed that the protons assume a configuration where they are spread out from each other because they are attempting to repel each other.

At about atomic number 83, bismuth, the tables are turned, and the electromagnetic force begins to have the upper hand. At this point, the nucleus is unstable, and "wants" to become stable, by decaying to a stable configuration. This is radioactivity.

Even before atomic number 82, lead, however, there are some radioactive elements, such as carbon-14. This is due to unstable isotopic configuration of neutrons that also destabilize the nucleus, but that is outside the scope of this particular question.

Answer 3

figure it out your self dummy and stop looking for it on the internet

Answer 4

Nuclear change in matter is when the nucleus of the reacting atom has a change of composition. The types of nuclear change in matter are radioactive decay and nuclear transmission.

Answer 5

This involves a change in atoms.

Answer 6

I know everything about nuclear changes.