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Ions are formed when the number of valence electrons in an atom changes.

Explanation:

Valence electrons are located in the outermost shell. In order for atoms to become stable, they must react with other atoms to gain or loose electron(s).

Atoms can only loose electrons from their outermost shell to become stable, while the other atom, reacted with, gains electron(s) for the outer shell.

Explanation:

answer: the rate of diffusion increases with increase in temperature.

increase in temperature, increases the molecular/particles speed (kinetic energy. diffusion means movement of particles through the material.

generally, the heavier the particle the more it interacts with the environment and more the temperature matters. so higher temperature results in higher diffusion.

c)red bank

explanation:

red bank is a borough in monmouth county, new jersey, incorporated in 1908 and located on the navesink river, the area's original transportation route to the ocean and other ports.