What is a chemical change? Explain it with the help of an example?
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Chemical changes occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively, chemical decomposition into two or more different substances. ... An example of a chemical change is the reaction between sodium and water to produce sodium hydroxide and hydrogen.
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A Change Which Once Done, Cannot Been Return Back Into Original State.
Example:- Burning Of Wood, Burning Of Paper etc.
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