character: Mr. Smith
topic: Elementary Particles: Protons, Neutrons, and Electrons
grade: 9
subject: Chemistry
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character: Ms. Johnson
topic: Atomic Structure and the Role of Each Particle
grade: 9
subject: Chemistry
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character: Dr. Lee
topic: The Behavior of Electrons in Atoms
grade: 9
subject: Chemistry
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character: Mr. Davis
topic: Comparing the Properties of Protons and Neutrons
grade: 9
subject: Chemistry
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