By: Natasha Holder
JOHN DALTON
AN ENGLISH CHEMIST
Birth & death dates
DALTON WAS BORN IN 1766 INTO A QUAKER
FAMILY IN EAGLES FIELD, ENGLAND. HE WAS AN
AMAZING CHEMIST AND WAS KNOWN FOR
THINGS FROM THE STUDY OF COLOR
BLINDNESS AND METEOROLOGY TO ATOMS
AND ELEMENTS. HE DIED IN 1844,
MANCHESTER UK. AS STATED IN AN ARTICLE ON
HTTP://WWW.CHEMHERITAGE.ORG/DISCOVER/
ONLINE-RESOURCES/CHEMISTRY-INHISTORY/THEMES/THE-PATH-TO-THE-PERIODICTABLE/DALTON.ASPX
ONE OF DALTONS FIRST CONTRIBUTION
TO THE ATOM
Daltons fascination with gases slowly led him
to believe that every form of matter, whether
it be a solid, liquid, or gas is made up of small
individual particles. He soon borrowed the
term “atomos” or “atoms” to label these
particles as stated in,
http://www.biography.com/people/johndalton-9265201#atomic-theory. In an article
that Dalton had wrote for the Manchester
literary and philosophical society in 1803,
Dalton had made the first atomic weights.
A NEW SYSTEM OF CHEMICAL
PHILOSOPHY
Wanting to expand on his theory he readdressed atomic weight in
a book that he published in 1808 called a new system of chemical
philosophy. In this book, Dalton introduced his belief that atoms
of different elements could be universally distinguished based on
their varying atomic weights. In doing this, Dalton was the first
scientist who explained the behavior of atoms in terms of the
measurement of weight. In his book, Dalton wrote about his
experiments proving that atoms consistently combine in simpler
ratios. This meant that, with the exception of water molecules,
molecules of an element are always made up of the same
proportions. As found on
http://www.biography.com/people/john-dalton-9265201#atomictheory.
MORE ABOUT HIS BOOK
In 1810, Dalton published an appendix to his book a new system of chemical
philosophy. In it he elaborated on some of the details of his theory that the atoms
within a given element are all exactly the same size and weight, while the atoms of
different elements look and are different from one other. Dalton also eventually
composed a table listing the atomic weights of all known elements. Also stated in
http://www.biography.com/people/john-dalton-9265201#later-life.
DALTON’S ATOMIC THEORY
1. All matter is made up of atoms. Atoms are indivisible
and indestructible.
2. All atoms in 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.
As stated in
http://www.iun.edu/~cpanhd/C101webnotes/composi
tion/dalton.html
AWARDS
One award that John Dalton received was the ‘Royal
award’ or the ‘Queen’s award.’ It is given to two
people a year who stand out in the field of science,
and he was awarded this medal for his development
in the atomic theory.
Dalton also had a few scholarships named after him
for those who excelled in science. As stated in,
http://johndaltonpd7.weebly.com/awards-andrecognition.html