The pH of this liquid is 7.

This compound contains anions.

I ionized hydrogen in a chemistry experiment.

Cations play an important role in electrochemical reactions.

I learned about the process of ionization in chemistry class.

The growth rate of the economy is calculated using an index.

This bottle contains an unknown liquid.

This compound separates into cations and anions.

I went shopping at Ion Mall.

Hydrogen is the most abundant element in the universe.