character: Materials Scientist
topic: Types of Building Materials and Their Chemical Properties
grade: 9
subject: Chemistry
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character: Chemist
topic: Properties of Concrete and its Components
grade: 9
subject: Chemistry
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character: Construction Engineer
topic: Sustainable Building Materials
grade: 9
subject: Chemistry
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character: Environmental Scientist
topic: Chemical Properties of Eco-friendly Materials
grade: 9
subject: Chemistry
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