1 janv. 1803 - John Dalton
Description:
1-Everything is composed of atoms, which are the indivisible building blocks of matter and cannot be destroyed.2-All atoms of an element are identical.
3-The atoms of different elements vary in size and mass.
4-Compounds are produced through different whole-number combinations of atoms.
5-A chemical reaction results in the rearrangement of atoms in the reactant and product compounds.
Ajouté au bande de temps:
Date:
1 janv. 1803
Maintenaint
~ Il y a 222 ans