Why does water come out of cut vegetables when salt is added?


Also, does the water contain any nutrients that we might miss?

In: Biology

Given a water permeable wall like the vegetable’s cells, water will move so that the concentration of dissolved substances like salt is equal on both sides. This process is called [osmosis](https://en.wikipedia.org/wiki/Osmosis). Why it does so is complicated, but ultimately, since there is more salt outside than inside, some amount of water is drawn out. You can also do this with sugar and probably other substances. Given a pure water environment, water will flow the opposite way, potentially causing cells to burst.