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Chemistry 13 Online
OpenStudy (dopeeaf):

Help please ??? J.J. Thompson's cathode-ray tube experiment showed which of the following? Atoms are small individual spheres. Atoms consist of at least some negatively charged particles. Electrons are in a cloud surrounding positively charged particles. Matter can be neither created nor destroyed.

OpenStudy (sapphiremoon):

It was that atoms consist of at least some negatively charged particles. (From memory, corroborated by a Google search.)

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