character: Mr. James Smith
topic: Periodic Table Basics
grade: 9
subject: Chemistry
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character: Ms. Emily Johnson
topic: Elements and Their Symbols
grade: 9
subject: Chemistry
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character: Dr. Sarah Lee
topic: Atomic Structure and the Periodic Table
grade: 9
subject: Chemistry
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character: Mr. Robert Brown
topic: Trends in the Periodic Table: Metals and Nonmetals
grade: 9
subject: Chemistry
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