1.Made the atomic theory
2.Discovered and studied color blindness
3.Made a system of atomic weights
Daltons atomic model
Thursday, December 3, 2009
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This is my blog on the famous English scientist John Dalton, and his achievements.
John Dalton
Daltons life
John Dalton was born in Eaglesfield, England on September 6, 1766. Dalton was born into a poor quaker family but still managed to get a good education from his father. When a local teacher died John Dalton took his place, at the age of 13. His teaching job was not succesful at all and after two years he started to farm. As Dalton farmed he received breif instructions on mathmatics from a distant relative. In 1781 Dalton gave up on farm work and became an assitant at his cousins school, in 1785 his cousin retired from teaching and Dalton and his brother ran the school. After teaching for 12 years he started to think about taking up law or medicene, but he did not have much incouragment from his relatives. In the spring of 1793 he moved to Manchester to be tought by a blind philosopher, this is where Dalton got much of his scientific knowledge. Thats when Dalton was appointed the teacher of mathmatics and natural philosophy at the New College in Moselesy street. While Dalton stayed at Kendal he started to keep a Meteorological diary. Dalton then wrote a book about Meteorological observations. Even though this book contained many new discoveries it did not sell well. After this Dalton began to study the facts relating to colors and Daltonism or colour blindness. Dalton studied this by comparing what he saw to what others saw and then wrote these observations down in his journal. Then Dalton went on to write many papers on diverse topics, such as the orgin of springs, the color of the sky, and steam. After Dalton's paper on steam he did many other papers on gasses and states of matter. This got him thinking and eventually led to his most famous theory, which was his Atomic Theory. I will go into detail about his atomic theory later in my blog. After Dalton wrote his atomic theory he had it published in the third edition of the System of Chemistry, a book written by Dr. Thomson. As an investigator Dalton was happy to have rough and inaccurate instruments even though other more accurate instruments were readily available. Dalton was described as a very coarse experimentor. Dalton died in Manchester in 1844 after paralysis.
Daltons timeline
1809 Abraham Lincoln is born
1822 Harriet tubman is born
Daltons Atomic Theory
1.) All matter is made of atoms. Atoms are indevisable and indestructable.
2.)All atoms in a given element are identical in mass and properties.
3.)Compounds are formed ba a combination of two or more different kinds of atoms.
4.)A chemical reaction is a rearrangement of atoms.
2.)All atoms in a given element are identical in mass and properties.
3.)Compounds are formed ba a combination of two or more different kinds of atoms.
4.)A chemical reaction is a rearrangement of atoms.
What is true about Daltons atomic theory?
1.) We now know that all matter is made up of atoms, but atoms can be destroyed to make nuclear reactions.
2.)We also now know that their are different types of atoms in an element called "isotopes"
3.)Daltons third part of his theory is accurate
4.)Daltons fourth part of his theory is accurate
2.)We also now know that their are different types of atoms in an element called "isotopes"
3.)Daltons third part of his theory is accurate
4.)Daltons fourth part of his theory is accurate
The quiz
When was John Dalton born?
A.1499
B.1766
C.1788
Where was he born?
A.Australia
B.England
C.Asia
What type of family did he come from?
A.Wealthy
B.Poor
C.Middleclass
Dalton used what type of instruments?
A.updated and accurate
B.Average
C.Old and outdated
How did Dalton die?
A.paraysis
B.Fever
C.Snake bite
T/F
Dalton went to college? T/F
Dalton taught at age 13 T/F
Dalton kept lots of notes T/F
A.1499
B.1766
C.1788
Where was he born?
A.Australia
B.England
C.Asia
What type of family did he come from?
A.Wealthy
B.Poor
C.Middleclass
Dalton used what type of instruments?
A.updated and accurate
B.Average
C.Old and outdated
How did Dalton die?
A.paraysis
B.Fever
C.Snake bite
T/F
Dalton went to college? T/F
Dalton taught at age 13 T/F
Dalton kept lots of notes T/F