1 janv. 1766 - John Dalton - Birth
Description:
- A meteorologist- Unlike Democritus he had experimental evidence to support his theory.
- Dalton had four major points to his theory.
1. All elements are composed of indivisible particles called atoms.
2. Atoms of the same element are identical, the atoms any one element are different from those of another.
3. Atoms of different elements mix or combine in whole number ratios
4. Chemical reactions occur when atoms seperate, join, or rearrange.
Ajouté au bande de temps:
Date:
1 janv. 1766
Maintenaint
~ Il y a 259 ans