Dalton's model of the atom
John Dalton suggested that all matter consists
of very small particles - atoms. He concluded
that atoms are small spherical particles that
cannot be separated further. All atoms of the
same element are equal to each other. They
have the same volume and mass. Atoms of
different elements differ in volume and mass.
There are as many types of atoms as there are elements. (12 St. 39 Min, 2 Jan 1808 Jahr – 14 Jan 1904 Jahr)