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John Dalton
BY: Abigail Contreras, Sydney Ruthesell, Jaykob Harrington
John Dalton
John Dalton was born September 6, 1766.
Born into a quaker family.
Went to college at Manchester.
John Dalton used to study color blindness in college.
The Year and Place of Discovery
In 1803 of the Greek era John Dalton proposed an “atomic theory” with spherical solid
atoms based upon measurable properties of mass. He determined the atomic theory in
England.
John Dalton´s atomic model
Atomic mass theory model
Represents what the atomic mass will be when molecules are added together
1 oxygen atom(16 units) added to 2 hydrogen atoms (1 mass unit each) would equal
18 mass units.
Facts daltons contributed
All matter is made up of atoms.
All atoms are identical in mass and properties. (later changes)
Compounds are formed by two or more different kinds of atoms.
A chemical reaction is a rearrangement of atoms.
Atoms are indivisible and indestructible.
He had made the atom a fundamental chemical object in the study of elements.
Questions
- What did John Dalton propose to the Atomic theory?
- What contribution did he make too the atomic model and our understanding of
atoms?
- When was John Dalton born?
- What year did john dalton dalton discover his theory?
Answers
-What did John Dalton propose to the Atomic theory? He proposed the atomic theory
- What contribution did he make too the atomic model and our understanding of
atoms? His atomic theory said that elements consisted of tiny particles called
atoms. All the atoms that make up an element have the same mass.
- When was John Dalton born? September 6,1766
- What year did dalton discover his theory? 1803