3 ore 30 min, 1 gen 1803 anni - Dalton
Descrizione:
All matter is made of atoms.Atoms are indivisible and indestructible.Compounds are formed by a combination of two or more different kinds of atoms.
Aggiunto al nastro di tempo:
Data:
3 ore 30 min, 1 gen 1803 anni
Adesso
~ 221 years ago