Understanding Acidity and pH

What does a pH value below 7 indicate about a substance?

• It is a strong base.

• It is neutral.

• It is acidic.

• It is basic.

What is the range of the pH scale?

• 0 to 20

• 0 to 14

• 0 to 10

• 0 to 7

What does a negative pH value signify?

• A neutral substance

• A weak acid

• A very strong acid

• A very strong base

What is the approximate pH level of Coca-Cola?

• 7.0

• 5.0

• 2.5

• 1.0

How does the acidity of stomach acid compare to that of Coca-Cola?

• They are equally acidic.

• Coca-Cola is more acidic.

• Stomach acid is more acidic.

• Stomach acid is less acidic.