Understanding pH

The video tutorial explains the concept of pH, which stands for the potential of hydrogen. It measures the concentration of hydrogen ions in a water-based substance. The pH scale ranges from 0 to 14, with 7 being neutral. Values less than 7 indicate an acid, while values greater than 7 indicate a base. The tutorial also explains why 7 is considered neutral.

What does pH stand for?

• Pressure of Hydrogen

• Presence of Hydrogen

• Potential of Hydrogen

• Power of Hydrogen

What does a pH value less than 7 indicate?

• A salt

• An acid

• A neutral substance

• A base

Which pH value is considered neutral?

• 10

• 14

• 7

• 0

What is the pH range for bases?

• 7 to 14

• 0 to 7

• 7 to 10

• 0 to 14

Why is the number 7 considered neutral on the pH scale?

• Because it is the midpoint of the scale

• Because it represents pure water

• Because it is the average of all pH values

• Because it is the most common pH value