Crazy chemistry of acids and bases
Chemicals can contain different quantities of hydrogen ions. Hydrogen is a colorless, odorless, non-metallic, and tasteless gas. Some pH (power of Hydrogen) indicators change colors to show the amount of hydrogen ions present in a chemical. The pH scale helps scientists determine whether a chemical is acidic, basic, or neutral. Different liquids have different pH values.
A chemical reaction occurs when an acid and base mix. Vinegar is an example of an acid. Clay is an example of a base.