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While balancing a chemical equation, the number of atoms of each element is kept the same on the reactant and product sides. Which law does this demonstrate?

Answer and explanation

Correct answer: Law of conservation of mass

In a balanced equation, the number of atoms of every element is the same on both the reactant and product sides. During a chemical reaction, atoms are neither created nor destroyed; they are only rearranged. Hence, the total mass remains unchanged, demonstrating the law of conservation of mass. The law of constant proportions concerns the fixed mass ratio of elements in a compound, not the balancing of an equation.

Related tags

ScienceClass10Chemical ReactionsBalanced EquationsConservation Of MassChemical Laws

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