AcidsICS16NGU

http://phet.colorado.edu/sims/html/ph-scale/latest/ph-scale_en.html

Notes:

 * The pH level of acids and bases change when you add water.
 * When you add water to acids the pH level rises
 * When you add water, you are making it more natural (water is neutral)
 * pH 7 is neutral
 * Adding more water to hand soap makes it more acidic than base
 * Adding more water to battery acid makes it more base than acid
 * the more acidic, the more hydrogen ions

The pH level change when you add water to acid and base. If you take battery acid and add water to it, you are making the battery acid less acid and more basic. The reason why is because water is neutral. When you add water to the battery acid, you are neutralizing the acid which causes it to be more basic. If you take hand soap and add water to it, you are making hand soap less basic and more acid. When you add water to acids, the pH level rises. When you add water to bases the pH level lower.