Our understanding of the atom has developed since John Dalton published his Atomic Theory in 1829. The model of the atom that pre-16 students meet is based upon the work of many scientists that helped ...

The scientist John Dalton carried out a series ... Changes to the atomic model Atoms can be broken down into smaller parts. An atom is made of tiny negatively charged electrons dotted about ...

There was little change in the understanding of the atom until John Dalton (1766-1844), an English ... In 1913, Niels Bohr revised Rutherford's model by suggesting that the electrons orbited ...