chemical reaction - is a process in which atoms of one or more substances rearrange to form one or more new substances., chemical equation - is a description of a reaction using element symbols and chemical formulas., reactants - The starting substances in a chemical reaction, products - The substances produced by the chemical reaction, law of conservation of mass - states that the total mass of the reactants before a chemical reaction is the same as the total mass of the products after the chemical reaction.,

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