pH Scale and Its Uses

What is the pH level of a neutral solution?

• 3

• 7

• 10

• 5

Which substance would have a lower pH value: lemon juice or baking soda?

• Vinegar

• Orange juice

• Lemon juice

• Milk

How is the pH of a solution measured using indicators?

• By tasting the solution

• By measuring the temperature of the solution

• By adding indicators to the solution and observing the color change.

• By listening to the solution

Is a pH of 3 considered acidic or basic?

• basic

• acidic

• alkaline

• neutral

Compare the pH values of vinegar and milk.

• Both vinegar and milk have the same pH level.

• Vinegar is more acidic than milk.

• Milk is more acidic than vinegar.

• Vinegar is less acidic than milk.

What pH level indicates a strong acid?

• pH level above 7

• pH level of 7

• pH level of 14

• pH level below 7

Explain the difference between acidic and basic solutions in terms of pH values.

• Acids have pH values greater than 7.

• Bases have pH values less than 7.

• Acids and bases have the same pH values.

• The main difference between acidic and basic solutions lies in their pH values. Acids have pH values less than 7, while bases have pH values greater than 7.

If a substance has a pH of 9, is it acidic, neutral, or basic?

• acidic

• neutral

• sour

• basic

What is the pH level of pure water?

• 5

• 7

• 8

• 10

Why is it important to understand pH levels in everyday life?

• pH levels do not affect the quality of food or drinks

• Understanding pH levels is only important for scientists

• pH levels have no impact on health or cleaning

• pH levels impact various aspects of health, cleaning, and consumption.