What did J.J think?
J.J thought that an electron was anegatively charged particle that was much smaller then the atom. he then thought that the tiny particles must have come from inside the atom. the tiny negatively charged electrons must have a postive charge around it.
and that the electrons carry no overall charge, so the charges must balance out.
| What did Dalton think?
John thought that atom were like hard tiny balls. elements can't be broken down and that elements have its own different form in mass.
he also thought that the atoms of different elements could be identified by there differences in their weight. John then found out that all matter is composed of atoms, “atoms cannot be made or destroyed, all atoms of the same element are identical, different elements have different types of atoms, chemical reactions occur when atoms are rearranged and compounds are formed from atoms of the constituent elements”.(www.chemsoc.org/timeline/pages/1803.html)