AP Chemistry Unit 8 Acids and Bases

What does pH measure?

• the amount of hydrogen (H⁺) ions

• the amount of hydroxide (OH^-) ions

• amount of water

• all of the above

Which of the following is a characteristic of a base?

• bitter

• sour

• corrosive

• releases hydrogen ions in water

Which of the following is a characteristic of an acid?

• bitter

• slippery

• sour

• releases hydroxide ions in water

What is a mixture of chemicals that react with a base/acid to keep pH in a particular range?

• catalyst

• enzyme

• water

• buffer

What does a base release when placed in water?

• hydroxide ions (OH-)

• hydrogen ions (H+)

• ions

• molecules

What does an acid release when placed in water?

• hydroxide ions (OH-)

• hydrogen ions (H+)

• ions

• nothing

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

• 2

• 7

• 10

• 13

A substance with a pH of 5 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 is the strongest acid?

• 1

• 5

• 3

• 8

Tags

NGSS.HS-PS1-1