Question

If you place a crystal substance on a tabletop, return to view it after some time passes, and find it as a powdered substance, which of the following processes most likely took effect?

Answer 1

Evaporation might happen since the substance was dried out and formed into powdered form. It might be that the crystal contains a lot of water molecules and as the air passes the substance, it captures the air in the crystal causing it to evaporate.