The pH of this liquid is 7.

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

This compound contains anions.

Cations play an important role in electrochemical reactions.

I learned about the process of ionization in chemistry class.

I ionized hydrogen in a chemistry experiment.

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.