what changes occur when chemicals are mixed and which

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changes signal that a physical or chemical reaction has occured?

Sep 27th, 2015

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If the chemical reaction occurs then product can't converted into  reactant  again 

for example burning of coal formation of curd from milk  etc

while physical reaction in which the  product can converted into the reactant again.

 for example

formation of ice from water 

so ice can converted into water or water  can converted into ice .

 


  

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Sep 27th, 2015

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Sep 27th, 2015
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