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WorksheetsAcids and Bases
Total questions: 25
Worksheet time: 22mins
Name
Class
Date
1.
If a substance has a pH of 10 it is considered
a)
Acidic
b)
Basic
c)
Neutral
2.
Acids produce _________ ions when they break down or dissocciate.
a)
Hydroxide (OH-)
b)
Water
c)
Chlorine (Cl-)
d)
Hydrogen (H+)
3.
When blue litmus paper is placed in a base
a)
it turns red
b)
it stays blue
c)
it turns green
d)
it dissolves
4.
Bases release ____________ ions when they break down or dissociate.
a)
Hydrogen (H+)
b)
Hydroxide (OH-)
c)
Chlorine (Cl-)
d)
no
5.
Water is neutral because the number of hydrogen and hydroxide ions is _________.
a)
the same
b)
different
6.
The pH scale ranges from ____________.
a)
0-7
b)
1-100
c)
1-20
d)
0-14
7.
Bases are substances that ...
a)
accept hydrogen atoms
b)
reject hydrogen atoms
8.
A(n) ______ is a substance with a pH less than 7
a)
Acid
b)
Alkaline
c)
Base
d)
Buffer
9.
A(n) _______ is a substance with a pH greater than 7.
a)
Base
b)
Acid
c)
Buffer
d)
Water
10.
What is the only substance with a neutral pH of 7?
a)
Milk
b)
Orange Juice
c)
Water
d)
Blood
11.
A solution with a pH of 8.6 would be...
a)
Acid
b)
Base
c)
Neutral
d)
Acid and Base
12.
A solution with a pH of 3.6 would be...
a)
Acid
b)
Base
c)
Neutral
d)
Acid and Base
13.
A solution with a pH of 7.0 would be...
a)
Acid
b)
Base
c)
Neutral
d)
Acid and Base
14.
The pH scale is based off of the concentration of _________ ions.
a)
Oxygen
b)
Hydronium (H+)
c)
Nitrogen
d)
None of the others
15.
According to the pH range which substance is more acidic than lemon juice
a)
Hydrochloric acid
b)
cabbage
c)
milk
16.
Which of the following substances would have the greatest concentration of H+ ions?
a)
Ammonia with
pH 13
pH 13
b)
Water with
pH 7
pH 7
c)
Milk with
pH 5
pH 5
d)
Lemon juice with
pH 2
pH 2
17.
What is the pH of a solution that has a [H+] of 2.5 x 10-5?
a)
4.60
b)
5.0
c)
2.5
d)
7
18.
What is the pOH of a solution where the [OH-] is 7.3 x 10-2 M?
a)
-1.14
b)
2.0
c)
1.14
d)
7.3
19.
What is the [OH-] if the [H+] is 1.0 x 10-3M?
a)
1.0 x 10-3 M
b)
6.02 x 10-23 M
c)
1.0 x 10-14 M
d)
1.0 x 10-11 M
20.
What is the [H+] if the pH is 4.0?
a)
1.0 x 10-10 M
b)
1.0 x 10-4 M
c)
1.0 x 10-14 M
d)
1.0 x 10-7 M
21.
What is the pOH of a solution that has a pH of 2?
a)
10
b)
12
c)
14
d)
1
22.
What is the [OH-] if the pH is 4.9?
a)
7.94 x 10-10 M
b)
1.0 x 10-4 M
c)
7.94 x 10-14 M
d)
4.9 x 10-10 M
23.
The lower the pH, the greater the concentration of :
a)
OH-
b)
H+
24.
The greater the pOH, the smaller the concentration of
a)
OH-
b)
H+
25.
What is the pH of a solution where the [H+] is 1.0 x 10-11?
a)
11
b)
13
c)
14
d)
1
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