JOHN DALTON
By: Jasmine and Kelsey
BIOGRAPHY OF JOHN DALTON
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John Dalton was born in early September 1766 in Eaglesfield,
Cumberland, England. He was the youngest child of Joseph
Dalton and Deborah Greenup to survive to adulthood. He went
to John Fletcher’s Grammar school. By the age of 12, he was
doing lectures in public and was a teacher at Quaker boarding
school. He continued to teach at this school for the next ten
years there until he moved to Manchester and got a teaching
position there.
He also joined the literacy and philosophy society. Through
this society, he was able to be involved in very high level
conversations and labs.
He began to write papers to explain his understanding and
knew knowledge. His first paper was on colour blindness
which was, and is still often referred to as “Daltonism.”
Into his life he was also very interested in meteorology which
is what he based his atomic theory on.
John Dalton has proposed the Atomic theory in the year 1808.
CONTRIBUTIONS
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John Dalton made the most important discovery
in science called the Atomic theory. The theory is
where matter is composed of atoms differing
weights and combine in simple ratio’s by weight.
The atomic theory says: all matter consists of
tiny particles, atoms are indestructible and
unchangeable, elements are characterized by
the mass of their atoms, and when elements
react, their atoms combine in simple, wholenumber ratios.
PARTS OF THE ATOMIC THEORY
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The Five parts to the Atomic Theory are:
1. All matter is composed of extremely small
particles called atoms.
2. Atoms of a given element are identical in size,
mass, and other properties; atoms of different
elements differ in size, mass, and other properties.'
3.Atoms cannot be subdivided, created or destroyed.
4.Atoms of different elements combine in simple
whole-number ratios to form chemical compounds.
5.In chemical reactions atoms are combined
separated or rearranged.
PICTURES OF THE ATOMIC THEORY
Through John Dalton’s life, even though he was
credited for discovering many things, and given
many honors, he always lived a very modest
lifestyle.
When he died in 1844 where
there were 40 000 people
in his funeral procession.
RESOURCES
Http://tpollock.tripod.com/johndalton.html
 http://antoine.frostburg.edu/chem/senese/101/ato
ms/dalton.shtml
 http://wiki.answers.com/Q/What_are_the_parts_o
f_Dalton's_atomic_theory
 http://www.chemheritage.org/discover/chemistryin-history/themes/the-path-to-the-periodictable/dalton.aspx
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