reactants - a substance that takes part in and undergoes change during a reaction, products - a substance that is formed as the result of a chemical reaction, coefficient - s a small whole number that appears in front of a formula in a chemical equation, balanced equation - a chemical reaction in which the number of atoms for each element in the reaction is the same for both the reactants and the products, conservation of mass - mass is neither created nor destroyed in chemical reactions, isolated or closed system - a system is where no reactants or products can escape,

Conservation of Mass

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