Is the process of changing from one phase of matter to another a physical change or a chemical change? explain why

When molecules move from one phase to another they are still the same substance. There is water vapor above a pot of boiling water. ... Even though the physical state changed, the chemical properties were the same. On the other hand, a chemical change would build or break the chemical bonds in the water (H2O) molecules.

When molecules move from one phase to another they are still the same substance. There is water vapor above a pot of boiling water. Even though the physical state changed, the chemical properties were the same. On the other hand, a chemical change would build or break the chemical bonds in the H2O molecules