Final answer:
When a piece of halite is left in an area prone to rain and wind, the most likely physical change that will happen is dissolution. The rainwater will dissolve the halite, causing it to break down and disappear.
Step-by-step explanation:
When a piece of halite is left in an area prone to rain and wind, the most likely physical change that will happen is dissolution. Dissolution is the process in which a solid substance dissolves in a liquid to form a homogeneous solution. In this case, the rainwater will dissolve the halite, causing it to break down and disappear.
This can be explained by the fact that sodium chloride (rock salt) is a highly soluble compound in water. The presence of water will cause the NaCl molecules to separate from each other and mix with the water molecules, forming a solution.
As the rain continues to fall on the piece of halite and the wind blows, it will erode the halite and carry away the dissolved salt. This process will continue until the piece of halite is completely dissolved and no longer visible.