The state of matter is an example of a physical property. why is the state of matter considered aphysical property, even though a substance may change between a solid, liquid, and gas?

The three states of matter are the three distinct physical forms that matter can take in most environments: solid, liquid, and gas. In extreme environments, other states may be present, such as plasma, Bose-Einstein condensates, and neutron stars. Further states, such as quark-gluon plasmas, are also believed to be possible. Much of the atomic matter of the universe is hot plasma in the form of rarefied interstellar medium and dense stars.

The answer is 12, for the points

That depends on what kind of environ meant it is in  in space it has the same force that was applied when the velocity was gained