AP Chemistry Unit 8 Acids and Bases

A pH of 3 is how many times more acidic than a pH of 5?

• 2

• 20

• 10

• 100

A pH of 8 is how many times more acidic than a pH of 11?

• 3

• 30

• 100

• 1000

A substance with a pH of 8 is...

• a weak base

• a weak acid

• a strong base

• a strong acid

An acid can be corrosive.

• True

• False

A substance with a pH of 7 is which of the following?

• acid

• base

• neutral

A substance with a pH of 11 is which of the following?

• acid

• base

• neutral

A substance is found to have the following characteristics:

Very bitter taste

Feels slippery to the touch

Produces OH- ions when dissolved in water

In what category would the substance be classified?

• acid

• base

• enzyme

• fatty acid

The strongest bases have pH values close to

• 0

• 14

• 7

• 5

Which of the following is a base?

• baking soda in water

• orange juice

• vinegar

• lemonade

Which is the stronger acid?

• pH 1

• pH 4

• pH 8

• pH 13