Question

Why the interconversion of states of matter is considered a physical change? Give three reasons to justify your answer.

Answer 1

The interconversion of states of matter is considered a physical change because of the following reasons:

1. Physical change is a reversible change which means a substance can come back to its first form.
2. There is no change in the chemical properties of the substance. Ice, water and water vapour have the same chemical formula H₂O and they are present in solid, liquid, and gaseous states.