Laws of Chemical Combination and Atomic Theory

This topic explores the fundamental laws governing physical and chemical changes: the Law of Conservation of Mass (matter is neither created nor destroyed) and the Law of Constant Proportions (elements in a compound comb…

• The Law of Conservation of Mass was proposed by Antoine Lavoisier in 1789.
• Mass is conserved in both physical and chemical changes.
• In a chemical reaction, the total mass of reactants equals the total mass of products.

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