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DALTONS ATOMIC THEORY
The concept of an atom was presented by john Dalton long before two centuries ago.
It was quite a success for the scientist of that period but after his theory many scientist
challenged it and proposed there own but according to Dalton's theory .
it states that.
| 1) All matter is made of atoms. Atoms are indivisible and indestructible. 2) All atoms of 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. |
But modern atomic theory is little bit change to Dalton's theory .
Today we know that atoms can be destroyed during nuclear reactions but not by chemical reactions. Also, there are different kinds of atoms (differing by their masses) within an element that are known as "isotopes", but isotopes of an element have the same chemical properties.
Many chemical phenomena were quickly explained by Dalton with his theory. Dalton's theory quickly became the theoretical foundation in chemistry.
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