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Type: Multiple-Choice
Category: Atomic Structure
Level: Grade 8
Score: 1
Author: abrown1201
Last Modified: 6 years ago

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Atomic Structure Question

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Grade 8 Atomic Structure

What did J.J. Thomson's experiment show?
  1. The atom is like a uniform sphere.
  2. Cathode rays are made up of electrons.
  3. All atoms undergo radioactive decay.
  4. Isotopes undergo radioactive decay.