1. By: Nicole Spero Emily Gaskins Blake Baldwin Tobey Mathis 1 st Period THE HISTORY OF JOHN DALTON FATHER OF ATOMIC THEORY

2.  Developed the idea of the Atomic theory  Dalton proposed that all matter is made up of atoms and that they are invisible and indestructible building blocks (matter cannot be created nor destroyed)  His theory also enforces how different elements all have atoms with different sizes and masses, and that all atoms of a single element is identical  He also proposed that elements cannot be altered or destroyed chemically, but they can be combined to create even more chemical compounds  His theory states that all compounds are composed of combinations of these atoms in defined ratios  He also says that chemical reactions lead to the rearrangement of the reacting atoms (reactants and products)  The designation (naming) of the atomic mass unit is as a Dalton  Time of Discovery: Dalton began to come up with the atomic theory when he published an article for the Manchester Library and Philosophical in 1803 in Manchester, UK. He also published his book A New System of Chemical Philosophy in 1808 which covers the following parts of his theory. SCIENTIFIC FACTS OF DALTON

3.  He was a chemist, physicist and meteorologist  He was born in September 6, 1766 and died in Jul 27, 1844  He received the royal medal in 1826, an award given every year for “the most important contributions to the advancement of natural knowledge”  He was the teacher of James Prescott Joule OTHER FACTS

4. ATOMIC MODEL

5.  https://www.boundless.com/chemistry/textbooks/boundless- chemistry-textbook/atoms-molecules-and-ions-2/history-of- atomic-structure-32/john-dalton-and-atomic-theory-197-6138/ https://www.boundless.com/chemistry/textbooks/boundless- chemistry-textbook/atoms-molecules-and-ions-2/history-of- atomic-structure-32/john-dalton-and-atomic-theory-197-6138/  http://chemed.chem.purdue.edu/genchem/history/dalton.ht m http://chemed.chem.purdue.edu/genchem/history/dalton.ht m  http://en.wikipedia.org/wiki/John_Dalton http://en.wikipedia.org/wiki/John_Dalton  http://www.biography.com/people/john-dalton- 9265201#atomic-theoryhttp://www.biography.com/people/john-dalton- 9265201#atomic-theory CITATIONS