What are facts about pH?

I think its cool that the pH scale is logarithmic! That means that a pH of 8 is 10 times more basic than a pH of 7! cool!

Its also really cool that pH is the negative logarithm of the hydrogen ion concentration!
theres a such things pH indicators which lets you know if the solution contains acidic base or not
pH is a scale that measures acidity and basicity of a substance, with a usual range of between 0-14. The closer the value is to zero, the more acidic the substance is. The closer it is to 14, the more basic it is. However, some extreme substances can have pH of higher than 15 or lower than 0. pH is calculated by the equations:

pH = - log [concentration of H+ ions]

(or)

pH = 14 + log [concentration of OH- ions]

Since it is a logarithmic scale, each number differs by a factor of ten from the next. For example, a substance of pH 3 is 10 times more acidic than a substance of pH 4.

The pH scale was first used by a Swedish botanist, I believe, in his studies to determine the effects of acidity on plant growth. The scientific community liked the idea so much that it became official.