Answer: Option (C) is the correct answer.
Explanation:
A chemical change is a change which brings change in chemical composition of a substance or reactant(s).
Thus, we can say the due to change in composition we get a new product.
For example, [tex]Na + Cl \rightarrow NaCl[/tex]
That is, NaCl is the new product formed.
Hence, we can conclude that common to all chemical changes is that a new substance is produced.
