Question

Water is a very unique substance because it can exist in all three phases of matter (solid, liquid, gas) within the normal temperature ranges found on Earth.
When one observes the phase of matter of water, one observes a ________ property of matter.

Answer 1

When one observes the phase of matter of water, one observes a physical property of matter.

Answer 2

Physical Because changing phases such as solid, liquid, gas are physical forms.