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18 questions
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 the strongest acid?
1
5
3
8
Which of the following is the strongest base?
4
14
7
15
What is the pH of blood?
7.0
7.4
7.8
8.0
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
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
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
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
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