character: Dr. Elementa
topic: Chemical Properties and Trends in the Periodic Table
grade: 9
subject: Chemistry
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character: Professor Atomic
topic: Atomic Structure and its Influence on Chemical Properties
grade: 9
subject: Chemistry
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character: Ms. Periodica
topic: Understanding Trends: Groups and Periods in the Periodic Table
grade: 9
subject: Chemistry
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character: Mr. Valence
topic: The Role of Valence Electrons in Chemical Properties
grade: 9
subject: Chemistry
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