An animation illustrates how peeling occurs between layers where bonding is weak in molybdenum disulfide.
solid state chemistry
When memory metal is bent, it deforms. When placed into hot water, the metal "remembers" its original shape.
When the beta form of mercury(II) iodide cools to below the transition temperature of 126°C, it returns to the red/orange alpha form.
Mercury(II) iodide is heated to convert it from its red low-temperature alpha form to its yellow high-temperature beta form.