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

 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

 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

ATOMIC MODEL

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