A pH scale shows pH values of 0 through 14 with a pH of 7 being neutral, lower numbers being more acidic, and higher numbers being more basic. An interactive slider bar on the pH scale can be dragged to whole number pH values. pH value
pH Scale
Acidic
Neutral
Basic
Battery acid
Lemon juice
Acid rain
Pure water
Seawater
Household bleach
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
H+ Concentration

A bar graph showing hydrogen ion concentration based on the position of the slider bar.

Equation: pH = minus log H superscript +
0 = minus log 1.0 or 1 × 10 to the power of 0