<- The first page of Dalton's " A New System of Chemical Philosophy " it shows various atoms and molecules depicted and was published in 1808.- DALTON HAD 5 MAIN POINTS IN HIS ATOMIC THEORY-
examples of, 1. ) elements are made up of tiny particles called atoms.
2. ) all atoms of a given element are identical.
Although, centuries before Dalton, Democritus suggested the idea of atoms, but Dalton's complete formulation of a consistant theory was a breakthrough.
- He published the atomic theory in 1808, in the book A New System of Chemical Philosophy.