4 ore 31 min, 15 feb 1803 anni - Dalton’s Atomic Theory: all matter is made of atoms that are indivisible and indestructible, all atoms of a given element are identical in mass and property, compounds are formed by the combination of two or more atoms of different kinds, and a chemical reaction is a rearrangement of atoms.
Aggiunto al nastro di tempo:
Data:
4 ore 31 min, 15 feb 1803 anni
Adesso
~ 222 years ago