character: Copper
topic: Role in Brass Composition
grade: 9
subject: Chemistry
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character: Zinc
topic: Contribution to the Properties of Brass
grade: 9
subject: Chemistry
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character: Alloys
topic: Understanding Metal Alloys
grade: 9
subject: Chemistry
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character: Metallurgy
topic: Science of Metal Composition and Properties
grade: 9
subject: Chemistry
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