The law of conservation of mass states that mass can neither be created nor destroyed in a chemical reaction. The total mass of the elements present in the products of a chemical reaction must be equal to the total mass of the elements present in the reactants.
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The law of conservation of mass states that in a closed system, the total mass remains constant during a chemical reaction. This fundamental principle, proposed by Antoine Lavoisier in the late 18th century, asserts that atoms are neither created nor destroyed in a chemical reaction; they are rearranged to form new substances. The total mass of the reactants equals the total mass of the products. This law underpins the foundation of modern chemistry, providing a crucial understanding of the preservation of matter in chemical processes and serving as a fundamental principle in balancing chemical equations.