Democritus,J.J tompson,Dalton,Chadwick all contributed to the atom. They but there ideas together to build on each other to get the model we have today.
Democritus- was the first on who created the idea of an atom.
jj tompson-he discovered the first electron. He created the idea of the structure of the atom.
dalton-he created his atomic therory.
chadwick-discovered the nuetron.
the difference between scientist was they were all in different time periods and use different materials to figure atuff out.
the time periods helped with there discoveries in many ways because it affected the equipment they had to use.they also helped on each others discoveries.
the atomic theory is still a theory because it has not been proven every time sometimes it is wrong.
understanding the structure of an atom is very important because everything is based and made up of atoms.
