1.1 What is the claim, evidence, and reasoning for the existence of electrons?
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Last updated 11:16 PM on 8/19/25
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What is the claim for the existence of electrons?
Atoms contain negatively charged electrons.
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What is the evidence for the existence of electrons?
J.J. Thomson’s cathode ray experiment, which showed that cathode rays are made of negatively charged particles.
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What is the reasoning for the existence of electrons?
Cathode rays bent in electric and magnetic fields, indicating they are made of charged particles. These particles are identical across different materials, meaning electrons are a fundamental part of all atoms.
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