character: Dr. Brown
topic: Periodic Table Trends
grade: 9
subject: Chemistry
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character: Ms. Green
topic: Chemical Properties of Elements
grade: 9
subject: Chemistry
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character: Mr. Smith
topic: Atomic Radius Trends
grade: 9
subject: Chemistry
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character: Mrs. White
topic: Electronegativity and Ionization Energy
grade: 9
subject: Chemistry
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