Understanding Conservation of Mass and Chemical Reactions

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This week's bellwork focuses on key concepts in chemistry, including the Law of Conservation of Mass, the definition of reactants, and best practices for balancing chemical equations. Students will explore the importance of maintaining mass in chemical reactions, learn what reactants are in a chemical equation, and discover the implications of changing subscripts while balancing. Additionally, students will calculate the molar mass of magnesium nitride (Mg₂N₃). These activities will enhance their understanding of fundamental chemical principles.

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Feb 19, 2026

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Understanding Conservation of Mass and Chemical Reactions

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Bellwork 21 3/26 – 3/30
Monday, March 26 • What does the Law of Conservation of Mass state?
Tuesday, March 27 • What are reactants?
Thursday, March 29 • When balancing equations, can you change the subscript?
Friday, March 30 • Find the molar mass of Mg2N3.