When people say the word nuclear, the first thing you think is KABOOM. Not really. Nuclear science involves much more then just a huge explosion. Nuclear Science, involves the nucleus of an atom. It doesn't involve covalent bonds between atoms or any other of that stuff, because that has hardly to do with the nucleus of an atom. Even though there is much more to nuclear science than bombs, and warheads, this is basically what I'm focusing on.
A nuclear weapon derives its destructive force from nuclear reactions of fusion or fission. As a result, even a nuclear weapon with a small yield is significantly more powerful than the largest conventional explosives, and a single weapon is capable of destroying an entire city.
One way of detonating an atomic bomb is called fission.What happens in a nuclear explosion, is when a U235 nucleus, or Pu239, or possibly any other fissionable materiale (we'll get to that later), is fissioned or split, and the bonds between the particles break, and there is leftover matter, which is released as heat and energy producing the big BOOM. Gasses are created from the fissioning the nuclei and rise upwards, producing the mushroom cloud, but as I said before, we will delve into that later. But we have found out a more efficient way of releasing energy. Fusion is when we fuse two atomic nuclei, and the same result happens, a release of energy. But the energy released is much more than that of fission. Fusion bombs are 1,000 times more powerful than fission bombs and are measures in Megatons, rather than Kilotons.
Now let's go a little deeper into our study of an atomic bomb...