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salantis [7]
3 years ago
7

BRAINLIESTTTT ASAP!!!

Biology
1 answer:
agasfer [191]3 years ago
4 0
Dalton's atomic theory said, apart from other things, said that an atom was the smallest things and that all matter was composed of atoms.
But J. J. Thomson discovered the electrons, particles smaller than atoms, and after that, changes to Dalton's theory were made.

Hope it helped!
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