character: Mr. Dalton
topic: The Periodic Table and Its Structure
grade: 9
subject: Chemistry
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character: Ms. Curie
topic: Understanding Electronegativity in Chemical Bonds
grade: 9
subject: Chemistry
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character: Dr. Mendeleev
topic: The Evolution of the Periodic Table
grade: 9
subject: Chemistry
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character: Professor Linus
topic: Comparing Electronegativity of Elements
grade: 9
subject: Chemistry
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