All numbers below 7.
Acidity increases with decreasing number, for example, 1 is the most acidic.
There is no particular symbol for acids. Different acids have different formulae. But sometimes to show that a reaction is taking place in acidic medium, the sign of H+ is used because all acids give H+ ion.
it is a scale that measures liquid
Acids and bases are described in the pH scale based on their strength. For instance,lactic acid has pH 6,but curd,obtained from milk itself has pH 3! HCl is called as the "king of acids" with pH 1. {on the pH scale,if any substance has pH 7, its considered acidic, while anything above 7 is basic.} Acids or Bases can be considered as acidic or basic by the colour changes in the pH scale{eg:red to orange[neutral]to violet}.
By the use of pH scale.
The acic side is the left side of the scale
On the pH scale, acids have a pH of less than 7.
A pH under 7 is typical for acidic solutions.
The pH scale goes from 1-14. The strongest bases will be at 12 and 13 and the strongest acids will be at 1-2.
The PH scale is the measurement of acids and bases. 8 and up are bases. 6 and lower are acids. 7 is neutral.
There is no particular symbol for acids. Different acids have different formulae. But sometimes to show that a reaction is taking place in acidic medium, the sign of H+ is used because all acids give H+ ion.
a pH scale is something used for measuring the strengths of acids and bases.
Anywhere from 0-6.9 on the pH scale
it is a scale that measures liquid
Acids and bases are described in the pH scale based on their strength. For instance,lactic acid has pH 6,but curd,obtained from milk itself has pH 3! HCl is called as the "king of acids" with pH 1. {on the pH scale,if any substance has pH 7, its considered acidic, while anything above 7 is basic.} Acids or Bases can be considered as acidic or basic by the colour changes in the pH scale{eg:red to orange[neutral]to violet}.
Acids have a pH under 7, alkalis have a pH bigger than 7.
By the use of pH scale.
1-6.