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WorksheetsAcids and Bases [4NA]
Total questions: 20
Worksheet time: 23mins
Name
Class
Date
1.
Which of the following statements is correct?
a)
Blue litmus paper turns red when placed in a base.
b)
Red litmus paper turns blue when placed in a base.
c)
Blue litmus paper stays blue when placed in an acid.
d)
Red litmus paper stays red when placed in a base.
2.
The pH of a solution is tested, and it is found to be a basic solution. Of the following choices, what could the pH have been?
a)
3
b)
9
c)
7
d)
5
3.
Ammonia has a pH of 12. Ammonia is __________.
a)
an acid
b)
a base
c)
an element
d)
a metal
4.
When dissolved in water, bases produce:
a)
acids
b)
salts
c)
hydrogen ions
d)
hydroxide ions
5.
Which of these solutions is an acid?
a)
Dish Soap: pH of 12
b)
Tomato Soup: pH of 4
c)
Baking Soda: pH of 9
d)
Drain Cleaner: pH of 14
6.
The pH of vinegar is 2.5. Vinegar is a _____________.
a)
strong acid
b)
strong base
c)
weak base
d)
weak acid
7.
Which of the following is true about acids and bases?
a)
The lower the pH, the stronger the acid
b)
the higher the pH, the stronger the acid
c)
The lower the pH, the more neutral the acid
d)
The higher the pH, the weaker the base
8.
Which type of ion does a base produce when it is dissolved in water?
a)
oxide
b)
oxygen
c)
hydrogen
d)
hydroxide
9.
Which statement is true when acids and bases are mixed together?
a)
acids become stronger
b)
bases become stronger
c)
there is no change
d)
they neutralize each other
10.
Williams collected a rain sample and measured its pH to be 5.9. What does this mean?
a)
the rain water is a weak base
b)
the rain water is neutral
c)
the rain water is a strong acid
d)
the rain water is a weak acid
11.
Litmus paper can tell you if a solution is acidic, neutral or basic by changing color when placed in a solution. If you test a base with litmus paper, it will turn ____________.
a)
purple
b)
red
c)
blue
d)
pink
12.
Which of these pH values would indicate that a solution is a weak base?
a)
4
b)
5.6
c)
8
d)
13
13.
When dissolved in water, acids produce:
a)
bases
b)
salts
c)
hydrogen ions
d)
hydroxide ions
14.
Neutral solutions have a pH of:
a)
0
b)
1
c)
7
d)
14
15.
Vinegar, fruit juice, and cola are examples of:
a)
salts
b)
neutral substances
c)
bases
d)
acids
16.
NaOH may be found in drain cleaners and as a component of soaps. Is NaOH an acid or a base?
a)
Acid
b)
Base
c)
Neither (Neutral)
17.
This ion is responsible for the properties of acids
a)
Sodium ion
b)
Hydrogen ion
c)
Hydroxide ion
d)
Oxide ion
18.
This ion is responsible for the properties of bases
a)
Sodium ion
b)
Hydrogen ion
c)
Hydroxide ion
d)
Oxide ion
19.
Milk is a very weak acid. What might its pH value be?
a)
6.5
b)
7.8
c)
2.2
d)
12.2
20.
What is the chemical formula of sulfuric acid?
a)
HSO3
b)
H2SO3
c)
H2SO4
d)
H3SO4
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