The word atom comes from the Greek "atomos" which means indivisible, indivisible. It was therefore perfectly suited to the concept of the atom when it was developed by chemists in the early nineteenth century, ie as the smallest part of a pure body.
Now, we know that atoms are not indivisible, that we can pull out electrons, fission their nucleus, etc ... But the name has remained!
<span>J. J. Thomson’s experiment disproved the theory that an atom is indivisible.
Because his experiments proved that the atom contains smaller negative particles distributed in a large positive mass, concluding that the atom is not a solid uniform sphere. </span>
