25 févr. 1801 - John Dalton
Description:
His theory specified that atoms of a given element are identical, atoms cannot subdivided, created or destroyed.
"Law of constant compositon" - in a given compound the relative number and type of atoms is constant
"Law of conversation of mass" - Matter cannot be created or destoryed
Law of multiple proportions" -when chemical elements combine, they do so in small, whole number ratios.
He combined different gases and observed their properties regarding their density and pressure.
Ajouté au bande de temps:
History of the Atom
BIO10
Date:
