Which of these is common to all chemical changes? A) A change of state occurs. B) A change of color occurs. C) A new substance is produced. D) Heat is released into the air.

Question

asked Feb 28, 2017 181k views

2 Answers

Vlad Halmer · Answer 1 · 2017-03-05T05:22:32+0000

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.