What is water in a scientific knowledge

How does the motion of particles in a gas change as the gas cools

Which process describes vaporization that takes place below the surface of a liquid? condensation melting boiling evaporation

Which best describes the present-day universe? opaque, expanding very slowly, stars produce heavy elements transparent, expanding at an accelerated rate, stars produce heavy elements opaque, expanding at an accelerated rate, stars produce only hydrogen and helium transparent, expanding very slowly, stars produce only hydrogen and helium