If vegetables become wilted they can often be made crisp again by soaking them in water. What process causes this change?

Osmosis is the process that causes wilted vegetables to become crisp again when they are soaked in water. Osmosis is the movement of water molecules from an area of high concentration to an area of low concentration through a semipermeable membrane. When vegetables are wilted, they have lost water, so the concentration of water molecules inside the vegetables is lower than the concentration of water molecules outside the vegetables. When the vegetables are soaked in water, the water molecules move from the outside of the vegetables to the inside of the vegetables through the semipermeable membrane of the vegetable cells. This causes the vegetables to become crisp again.