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For our lesson today, I'll be explaining the development of the atomic structure. Listen closely and you may write down notes.
It all started with an English scientist called John Dalton in the 1800's. His Atomic Theory contained his conclusions on how atoms were made up and their properties.
As time went on, new scientists slightly altered Dalton's theory as well as disproving some of his claims.
This includes J.J. Thomson, who discovered the electron in 1897 thus disproving Dalton's claim that atoms are indivisible and are made of smaller particles.
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