Atomic Time Line
John Dalton 1803
Dalton’s atomic theory came in 4 different parts.
1) All matter is made up of atoms. Atoms are indivisible and they are indestructible.
2)All atoms of an element are identical in mass and properties.
3)Compounds are created by a combination of two or more different kinds of atoms.
4)A chemical reaction is a “rearrangement” of atoms.