Quiz about AP Chemistry PH and Buffers

Question 1

The pH scale is a range from:

Accepted Answer

0-14

Answer

1-7

Answer

1-5

Answer

1-20

Question 2

A(n) ______ is a substance with a pH less than 7

Accepted Answer

Acid

Answer

Alkaline

Answer

Base

Answer

Buffer

Question 3

A(n) _______ is a substance with a pH greater than 7.

Accepted Answer

Base

Answer

Acid

Answer

Buffer

Answer

Water

Question 4

What is the only substance with a neutral pH of exactly 7?

Accepted Answer

pure water

Answer

Milk

Answer

Orange Juice

Answer

ammonia

Question 5

Is this substance acidic, basic, or neutral?

Accepted Answer

Acidic

Answer

Basic

Answer

Neutral

Question 6

Is this substance acidic, basic, or neutral?

Accepted Answer

Neutral

Answer

Acidic

Answer

Basic

Question 7

A solution with a pH of 8.6 is

Accepted Answer

Basic

Answer

Acidic

Answer

Neutral

Answer

none of these

Question 8

A solution with a pH of 2.3 is

Accepted Answer

Acidic

Answer

Basic

Answer

Neutral

Answer

none of these

Question 9

A solution with a pH of 7.0 would be...

Accepted Answer

Neutral

Answer

Acid

Answer

Base

Answer

Acid and Base

Question 10

Complete the sentence.
A substance that is more basic has a _____ pH than a substance that is acidic.

Accepted Answer

higher

Answer

lower

Answer

the same

Answer

none of the above

Question 11

This substance releases OH- into solution

Accepted Answer

Base

Answer

Acid

Answer

Neutral

Question 12

An acid is a substance that releases

Accepted Answer

H+ in a water solution

Answer

OH- in a water solution

Question 13

Acids typically taste

Accepted Answer

sour

Answer

sweet

Answer

both

Question 14

pH paper is an indicator of acids and bases, it turns red for bases.

Accepted Answer

false

Answer

True

Question 15

A pH of 14 is a .....

Accepted Answer

Strong base

Answer

strong acid

Answer

weak acid

Answer

Weak base

Question 16

Bleach is a strong base. What would you predict the pH of bleach is?

Accepted Answer

13

Answer

17

Answer

1

Answer

2

Question 17

According to the pH range which substance is more acidic than lemon juice

Accepted Answer

Hydrochloric acid

Answer

cabbage

Answer

milk

Question 18

Which of the following is an acid?

Accepted Answer

orange juice

Answer

shampoo

Answer

baking soda

Answer

water

Question 19

Neutralization happens when acids and base combine

Accepted Answer

True

Answer

false

Question 20

If a substance is acidic, what could be added to raise the pH?

Accepted Answer

Baking Soda

Answer

Sulfur

Answer

Nitrogen

Answer

Vinegar

Question 21

If a pH is too basic, what can be added to make the pH more acidic?

Accepted Answer

Sulfuric Acid

Answer

Sodium Hydroxide

Answer

Water

Answer

Calcium Carbonate

Question 22

"Alkaline" is another word for a substance that changes pH paper to blue. This means "alkaline"=

Accepted Answer

base

Answer

acid

Answer

buffer

Answer

none of these

Question 23

Substances that help organisms minimize changes in pH are

Accepted Answer

buffers

Answer

bases

Answer

acids

Question 24

If the pH of milk changes very little when acid or base is added, the milk probably contains

Accepted Answer

buffers

Answer

more acid

Answer

more base

Question 25

Buffers help keep pH constant by adding or absorbing

Accepted Answer

H+

Answer

Na+

Answer

Cl-

Answer

electrons

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