Well, atoms with very massive and/or unstable nuclei (such as uranium, plutonium, radium, francium, etc) generally split by themselves without any outside intervention via a process known as alpha...
yes you can split an atom because that is how they made the atomic bomb and started the nuclear bombsmass energy is given off when the atom splits then the next atom will split because of the energy...
With a particle accelerator. A scientist at the U.S. Department of Energy put it this way: "One way is to strip off a bunch of its electrons with light pulses or with charged plates...and then send...