when does chemical reaction occur
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when gas is evolved
when change in temperature is there
when change in state of reactants is there
when change in colour is there
when a precipitate us formed
when change in temperature is there
when change in state of reactants is there
when change in colour is there
when a precipitate us formed
rohit710:
Actually you have written the characteristics of chemical equation
when these characteristics are seen then only we can say that chemical reaction have been taken place
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When a chemical change occurs , a chemical action is said to have taken place . A chemical change or chemical action is represented by a chemical action ,,Due to thses the matter undergoing change is known as reactant and new chemical component is called product ... This is how chemical reaction occur
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