pH Scale

Front

What is the pH scale?

Back

The pH scale is a numerical scale used to measure the acidity or basicity of a solution, ranging from 0 (very acidic) to 14 (very basic), with 7 being neutral.

Front

What pH value indicates a neutral solution?

Back

A pH value of 7 indicates a neutral solution.

Front

Is a solution with pH 8 more basic than a solution with pH 13?

Back

No, a solution with pH 8 is less basic than a solution with pH 13.

Front

What does a pH value below 7 indicate?

Back

A pH value below 7 indicates that the solution is acidic.

Front

What does a pH value above 7 indicate?

Back

A pH value above 7 indicates that the solution is basic (alkaline).

Front

What is an example of a strong acid?

Back

An example of a strong acid is hydrochloric acid (HCl), which typically has a pH around 1.

Front

What is an example of a strong base?

Back

An example of a strong base is sodium hydroxide (NaOH), which typically has a pH around 14.

Front

What happens to the pH of a solution when hydrogen ions are added?

Back

The pH of the solution decreases, making it more acidic.

Front

What happens to the pH of a solution when hydroxide ions are added?

Back

The pH of the solution increases, making it more basic.

Front

What is the relationship between pH and hydrogen ion concentration?

Back

The pH is inversely related to the hydrogen ion concentration; as the concentration of hydrogen ions increases, the pH decreases.