Acids and Bases

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

• 3

• 30

• 100

• 1000

What does a base release when placed in water?

• hydroxide ions (OH-)

• hydrogen ions (H+)

• ions

• molecules

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

Which pH has the most hydrogen ions (H+)?

• 2

• 7

• 10

• 13

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

• acid

• base

• neutral

A substance with a pH of 5 is which of the following?

• acid

• base

• neutral

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

• acid

• base

• neutral

As the number of hydrogen ions (H⁺) decreases, the pH ___________.

• increases

• decreases

• stays the same

Which of the following are properties of acids?

• They conduct electricity when dissolved in water

• They taste sour

• They react with metals to produce hydrogen gas

• All of the answer choices are correct