Final answer:
Ions tend to move from areas of high to low concentration. This is known as diffusion, a passive process driven by the random motion of particles and the concentration gradient.
Step-by-step explanation:
Ions tend to move from areas of high to low concentration. This is known as diffusion. Diffusion is the movement of particles from an area of higher concentration to an area of lower concentration. It occurs in various biological processes such as the movement of ions across cell membranes.
For example, if there is a higher concentration of a certain ion inside a cell compared to the surrounding environment, the ion will move out of the cell to equalize the concentration. Similarly, if there is a higher concentration of an ion outside the cell, it will move into the cell to equalize the concentration.
Diffusion is a passive process, meaning it does not require energy expenditure from the cell. It is driven by the random motion of particles and the concentration gradient.