Chemical reaction is a process by which two or more chemical compounds reacts with each other or a single chemical compound restructures os dissociates and finaly produce a new compound. The new product is called product of the chemical reaction and the substance that take place in reaction is called reactant. For example, let Hydrochloric acid and sodium hydroxide is are reactants of a chemical reaction. After a reaction these reactant produces sodiam chloride and water. It is an example of neutralization reaction.Reaction can be classified into following class. These are addition reaction, substitution reaction, redox reaction, dissociation reaction etc.
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