23 ottob 1803 anni - John Dalton

Descrizione:

John Dalton takes what Democritus said about the atom and says that:
Elements are made of extremely small particles called atoms.
Atoms of a given element are identical in size, mass, and other properties; atoms of different elements differ in size, mass, and other properties.
Atoms cannot be subdivided, created, or destroyed.
Atoms of different elements combine in simple whole-number ratios to form chemical compounds.
In chemical reactions, atoms are combined, separated, or rearranged.

Aggiunto al nastro di tempo:

Data:

Immagini:

Geo-marchi: