Question

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.

Answer 1

Answer:new substance produced

Step-by-step explanation:

Answer 2

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.