Periodic Table: Task 2

John Dalton:

-born into a Quaker family at Eaglesfield in Cumberland, England in 6th September 1766 and died in 27th July 1844.
-best known for his pioneering work in the development of modern atomic theory, and his research into colour blindness.
-Theories:
1.The atoms of a given element are different from those of any other element; the atoms of different elements can be distinguished from one another by their respective relative atomic weights.
2.All atoms of a given element are identical.
3.Atoms of one element can combine with atoms of other elements to form chemical compounds; a given compound always has the same relative numbers of types of atoms.
4.Atoms cannot be created, divided into smaller particles, nor destroyed in the chemical process; a chemical reaction simply changes the way atoms are grouped together.
5.Elements are made of tiny particles called atoms.
-used rough and inaccurate instruments but was contented with it, used his head more than his hands.
Source:http://en.wikipedia.org/wiki/John_Dalton