Question

define chemical reaction​

Answer 1

Answer:

a reaction which undergoes changes which are irreversible and in which a new substance is formed whose characters and composition are different from the original substance

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Answer 2

Answer:

Chemical reaction, a process in which one or more substances, the reactants, are converted to one or more different substances, the products. Substances are either chemical elements or compounds. A chemical reaction rearranges the constituent atoms of the reactants to create different substances as products

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