what are subatomic particles?

Answer 1

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Well, the 'sub' part of the word, in this case, means below the size of an atom. Subatomic particles are therefore smaller than atoms. They are the particles from which atoms are made. The stable particles, that is the ones that last a long time, are the electron, proton and neutron. But, several hundred particles have been discovered, most though, are very short lived, lasting only a few billionths of a second. :) :)

Answer 2

In simplest forms, a subatomic particle is a particle smaller than an atom.

Source(s): Science Geek, Merrium-Webster

Answer 3

particles inside a nucleus like protons, neutrons, electrons etc