1 janv. 1803 - John Dalton
Description:
Dalton's atomic theory proposed that all matter was composed of atoms, indivisible and indestructible building blocks. While all atoms of an element were identical, different elements have atoms of differing size and mass.Ajouté au bande de temps:
Date:
1 janv. 1803
Maintenaint
~ Il y a 222 ans