character: Sodium
topic: Sodium: Reactivity and Properties
grade: 9
subject: Chemistry
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character: Periodic Table
topic: Trends in Element Reactivity
grade: 9
subject: Chemistry
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character: Chemical Bonds
topic: Ionic and Covalent Bonds
grade: 9
subject: Chemistry
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character: Alkali Metals
topic: Properties of Alkali Metals
grade: 9
subject: Chemistry
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