Question

Which of these is common to all chemical changes?

Answer 1

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, $Na + Cl \rightarrow NaCl$

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.