John+Dalton

 ==Dalton  == ==  ==  1766-1844 an English chemist, meteorologist and physicist. media type="youtube" key="mXMFSVowbSc" height="175" width="256"

**Facts on John Dalton;**

 * born into a modern Quaker family in Cumbria, England
 * son of a weaver
 * joined his older brother at age 15 in running a Quaker school
 * around 1790 Dalton considered taking up law or medicine
 * spring of 1793, he moved to Manchester\
 * After teaching 10 years at a Quaker boarding school in Kendal, he to a teaching position in Manchester
 * kept daily weather records from 1787 until he passed away
 * he published the first table of atomic weights
 * Six elements in first table:
 * Hydrogen
 * Oxygen
 * Nitrogen
 * Carbon
 * Sulfur
 * Phosphorus


 * Dalton observed that:
 * Elements are made of tiny particles called atoms.
 * All atoms of a given element are identical.
 * 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 weights.
 * 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.
 * 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.
 * Died in London
 * Member of the Manchester Literary and Philosophy Society
 * orally presented Expieremental Essays
 * Published Law of Partial Pressures
 * Compounds were listed as binary, ternary, and quaternary. Molecules composed of two, three, four, atoms.
 * Atoms cannot be created or destroyed.

Dalton is known for his atomic theory: As you can see John Dalton had the first somewhat accurate drawing of an atom.