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Define a chemical reaction state four observation which help us to determine that a chemical reaction has taken place write one example of each observation with a balance chemical equation?

Answer»

dent!;)Here is ur Ans:-A chemical reaction is the process in which chemicals react to form new compounds where there ATOMIC mass are equal on both the sides.The observation we can conclude from chemical reaction is that1 change of state ( when we react QUICK lime with water )2 Change of colour (when we react zinc granules with FERROUS sulphate)3 change in temperature( any exothermic or endothermic reaction)4 evolution of GAS (when we react zinc sulphate with water H^2 gas is evolved)5 form of PRECIPITATE (any double displacement reaction ) Hope it helps you!... :*P*



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