Understanding the pH Scale

What does the pH scale measure?

• Temperature

• Acidity or basicity

• Pressure

• Volume

What is the pH of pure water?

• 0

• 7

• 14

• 10

Which of the following pH values indicates a strong acid?

• 3

• 7

• 10

• 1

Which of the following pH values indicates a strong base?

• 5

• 7

• 9

• 13

What is the pH range of acidic solutions?

• 0 to 7

• 7 to 14

• 0 to 14

• 7 to 10

What is the pH range of basic solutions?

• 0 to 7

• 7 to 14

• 0 to 14

• 3 to 7

If a solution has a pH of 8, is it acidic, basic, or neutral?

• Acidic

• Basic

• Neutral

• None of the above

Which of the following substances is likely to have a pH less than 7?

• Lemon juice

• Soap

• Baking soda

• Ammonia

Which of the following substances is likely to have a pH greater than 7?

• Vinegar

• Milk

• Bleach

• Coffee

What is the pH of a neutral solution?

• 0

• 7

• 14

• 10