I believe it is D solid to gas
The buoyant force is an upward force on an object submerged in a fluid. It is the resultant of the pressure force on the surface of the object. The buoyant force may be larger than the weight of the object causing it to accelerate upwards.
Hard water is water that has a high mineral content. Hard water is formed when water percolates through deposits of limestone and chalk which are made up mostly of calcium and magnesium carbonates.
Some examples of physical properties are:
color (intensive)
density (intensive)
volume (extensive)
mass (extensive)
boiling point (intensive): the temperature at which a substance boils.
melting point (intensive): the temperature at which a substance melts.
Hope this helped!!!XD