What is chemical reaction 

chemical reaction

Chemical reaction is one in which the two or more substance are react together and form a new product where the two or more substance react together called reactant and the result is know as the product  here is an example of the chemical reaction is as follows

                               A + B = C
Here is A and B are the reactant and the C is product is a result of the reaction of A and B.The chemical reaction is occur by the molecular combination of the A and B and after there molecular combination the product C is form and this is done by valency of the substance which the lass class electron of the substance and which is also called free electron.The free electron is cause of the chemical reaction

        the electronic cause of the chemical reaction is coming soon