character: Marie Curie
topic: Contribution to Chemistry and Radioactivity
grade: 9
subject: Chemistry
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character: Niels Bohr
topic: Atomic Structure and Frequency Standards
grade: 9
subject: Chemistry
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character: Max Planck
topic: Quantum Theory and Frequency Standards
grade: 9
subject: Chemistry
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character: Albert Einstein
topic: Theory of Relativity and Its Impact on Science
grade: 9
subject: Chemistry
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