character: Pliny the Elder
topic: Metallurgy in Ancient Rome
grade: 9
subject: Chemistry
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character: Aristotle
topic: Ancient Theories of Metals
grade: 9
subject: Chemistry
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character: Theophilus
topic: Medieval Chemistry and Metalworking
grade: 9
subject: Chemistry
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character: Alfred Nobel
topic: Modern Understandings of Chemical Properties
grade: 9
subject: Chemistry
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