1. JOHN DALTON MS. CASTILLO 1 ST PD.

2. BIOGRAPHY Born: 6 September 1766 Birthplace: Eaglesfield, Cumberland, England Died: 27 July 1844 Best Known As: The weather pioneer who advocated atomic theory

3. 1787-began doing weather observations and is remembered for what he recorded 1793-Published a book Meteorological Observations and Essays 1801-Came up with Dalton’s law of partial pressures

4. DALTON’S ATOMIC THEORY Dalton's Atomic Theory 1) All matter is made of atoms. Atoms are indivisible and indestructible. 2) All atoms of a given element are identical in mass and properties 3) Compounds are formed by a combination of two or more different kinds of atoms. 4) A chemical reaction is a rearrangement of atoms.

5. DALTON’S SYMBOLS

6. Daltons’ Models of Atoms Carbon dioxide, CO 2 Water, H 2 O Methane, CH 4

7. HOW/WHY IS HE IMPORTANT TODAY? Provided the basis for the atomic model for us to understand today in Chemistry classes, etc.

8. THE END Any Questions? Sources: John Dalton  http://northspringer.tripod.com/HistoryofAtom/id1.html http://northspringer.tripod.com/HistoryofAtom/id1.html Wikipedia  http://en.wikipedia.org/wiki/John_Dalton http://en.wikipedia.org/wiki/John_Dalton