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What are “hallmarks” of chemical reactions, that is,how can you observe that a chemical reaction has...

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Chemistry

What are “hallmarks” of chemical reactions, that is,how can youobserve that a chemical reaction has taken place?

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A Chemical reaction is accomponied by some physical or chemical changes to distinguish it from the reactants These changes may include the change of state solid reactants may get converted to liquid or gasous state change in color    See Answer
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