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WorksheetsAcids and Bases
Total questions: 61
Worksheet time: 1hrs 14mins
Name
Class
Date
1.
Pure water has a pH of 7. Pure water _______.
a)
is a base
b)
is a neutral substance
c)
could be either an acid or a base
d)
is an acid
2.
Many cleaning solutions are bases. Which of the following is a property of most bases?
a)
feels slippery
b)
white color
c)
can only be liquid
d)
tastes sour
3.
Human blood has a pH between 7.35 and 7.45. Which of the following best describes human blood?
a)
strongly acidic
b)
slightly acidic
c)
strongly basic
d)
slightly basic
4.
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.
5.
Carrie's teacher hands out test tubes filled with different chemicals and tells the students to identify their liquid as an acid, base, or neutral chemical. Carrie's test tube contains a clear chemical. She adds phenolpthalein to her test tube and gently moves the tube from side to side. A few moments later, the chemical in the test tube turns bright pink.
What type of chemical does Carrie have?
What type of chemical does Carrie have?
a)
Carrie has a neutral chemical.
b)
Carrie has an acidic chemical.
c)
Carrie has a basic chemical.
d)
The type of chemical Carrie has cannot be determined.
6.
Which is the stronger acid?
a)
pH 1
b)
pH 4
c)
pH 8
d)
pH 13
7.
In a base phenolphthalein will give what color?
a)
Green
b)
Blue
c)
Pink
d)
Clear
8.
Turns litmus blue.
a)
Acids
b)
Bases
c)
Salts
d)
All
9.
Turns litmus red
a)
Acids
b)
Bases
c)
All
10.
Which has a pH above 7?
a)
Acid
b)
Base
11.
When put into a basic solution, red litmus paper ________.
a)
stays red
b)
turns blue
c)
turns magenta
d)
turns violet
12.
When put into a solution that is basic, phenolphthalein turns __________.
a)
blue
b)
violet
c)
black
d)
magenta
13.
Holly has an unknown substance in a beaker. She wants to determine the relative pH of the unknown substance. She places a piece of blue litmus paper into the substance, and the litmus paper stays blue.
The substance in the beaker
The substance in the beaker
a)
is a base.
b)
has a neutral pH.
c)
is an acid.
d)
does not have a pH.
14.
Which of the following is a base?
a)
orange juice
b)
water
c)
vinegar
d)
dishwashing detergent
15.
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.
16.
Which of the following is an acid?
a)
shampoo
b)
baking soda
c)
orange juice
d)
water
17.
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
18.
Pure water has a pH of 7. Pure water _______.
a)
is a base
b)
is a neutral substance
c)
could be either an acid or a base
d)
is an acid
19.
Values from 0-14 that determine the acidity of a solution
a)
Punnett Square
b)
Matrix
c)
pH scale
d)
Math number line
20.
Tastes bitter.
a)
Acids
b)
Bases
c)
Salts
d)
All
21.
What is the range of pH values in an acidic solution?
a)
0-7
b)
7-14
c)
15-239058204958
d)
pH = 7
22.
Which is the stronger acid?
a)
pH 1
b)
pH 4
c)
pH 8
d)
pH 13
23.
According to the pH range which substance is more acidic than lemon juice
a)
Hydrochloric acid
b)
cabbage
c)
milk
24.
Neutralization reactions
a)
formed from joining positive and negative ions
b)
increases OH ions
c)
froms a salt and water
d)
increases H2O ions
25.
Acids are __________, which means they "eat away" at other materials.
a)
transitional metal
b)
alkaline
c)
flammable
d)
corrosive
26.
The esophagus is the tube that connects the mouth to the stomach. Heartburn occurs when some of the stomach juices flow backwards up the esophagus. To help relieve heartburn, a person should take medicine that is
a)
neutral
b)
basic
c)
acidic or basic.
acidic or basic.
d)
acidic
27.
Which of the following word pairs correctly completes the sentence below?
_______ are corrosive substances characterized as having a strong smell, a sour taste, and a _______.
_______ are corrosive substances characterized as having a strong smell, a sour taste, and a _______.
a)
Acids; pH less than 7
b)
Acids; pH greater than 7
c)
Bases; pH greater than 7
d)
Bases; pH less than 7
28.
If an acid is combined with a base of equal strength, the result will most likely be
a)
a neutral solution.
b)
a stronger acid.
c)
impossible to tell without testing the pH.
d)
a stronger base
29.
Ammonia has a pH of 12. Ammonia is __________.
a)
an acid
b)
a base
c)
an element
d)
a metal
30.
When dissolved in water, bases produce:
a)
acids
b)
salts
c)
hydrogen ions
d)
hydroxide ions
31.
What does the pH scale measure?
a)
the concentration of acids and bases
b)
the malleability of a metal
c)
the temperature of the water in a swimming pool
d)
the amount of phosphorus in a compound
32.
The pH of vinegar is 2.5. Vinegar is a _____________.
a)
strong acid
b)
strong base
c)
weak base
d)
weak acid
33.
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
34.
Which type of ion does a base produce when it is dissolved in water?
a)
oxide
b)
oxygen
c)
hydrogen
d)
hydroxide
35.
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
36.
Williams collected a rain sample and measured its pH to be 5.6. 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
37.
Any substance that produces hydroxide ions in water is known as _____________.
a)
an acid
b)
a hydrogen ion
c)
a base
d)
a neutral
38.
When dissolved in water, acids produce:
a)
bases
b)
salts
c)
hydrogen ions
d)
hydroxide ions
39.
Which of the following will conduct electricity? Select all that apply
a)
Acidic solutions
b)
Basic solutions
c)
Ionic solutions
d)
Neutral covalent solutions
40.
Which of the following are properties of acids but not bases? Select all that apply.
a)
Changes the color of an indicator
b)
Sour taste
c)
Reacts with metals to produce hydrogen gas
d)
Feels slippery
41.
Bases have a pH of
a)
7
b)
Less than 7
c)
More than 7
42.
Neutralization is the process of an acid and a base reacting to form what? Select all that apply
a)
An ionic salt
b)
Hydronium ions
c)
NaCl
d)
Water
43.
Which of the following are strong acids? Select all that apply
a)
HI
b)
H2SO4
c)
HF
d)
HCl
e)
HClO3
44.
An arrhenius acid
a)
produces hydroxide ions in a solution
b)
is a proton donor
c)
produces hydrogen ions in a solution
d)
is a proton acceptor
45.
What is an acid?
a)
a chemical substance that neutralizes alkalis, dissolves some metals, and turns litmus paper red
b)
Has a pH of 11
c)
Has a pH of 7
46.
What is a base?
a)
Has a pH of 3
b)
Has a pH of 7
c)
substances that are slippery to the touch; turns red litmus paper blue
47.
What does a pH scale do?
a)
Tells if a substance is an acid or base
b)
Measures the strength and weakness of acids and bases
c)
Both statements are correct
48.
You can eat or drink an acid.
a)
True
b)
False
49.
You can eat or drink a base.
a)
True
b)
False
50.
Vinegar is a base.
a)
True
b)
False
51.
What is another name for a base?
a)
Acid
b)
Alkaline
c)
pH
52.
Which of the following describes a battery?
a)
Acid
b)
Base
53.
What is the pH of water?
a)
11
b)
4
c)
7
54.
HCl is found in household products, including some toilet bowl cleaners. Is HCl an acid or a base?
a)
Acid
b)
Base
c)
Neither (Neutral)
55.
The pH scale is used to determine the strength of
a)
acids and bases
b)
chemical bonds
c)
electrical charges
d)
particles in a solution
56.
According to Arrhenius, what is the definition of an ACID?
a)
a substance that contains hydroxide and ionizes to produce OH-
b)
a substance that contains hydrogen and ionizes to produce H+
c)
a substance that contains hydrogen and ionizes to produce OH-
d)
a substance that contains hydroxide and ionizes to produce H+
57.
Bases are what range on the pH scale?
a)
0-6.99
b)
7
c)
7.1-14
d)
0-14
58.
Drain cleaner has a pH of 13. What is drain cleaner?
a)
An acid.
b)
A strong base.
c)
Neutral.
d)
A weak base.
59.
hydrochloric acid
a)
HCl
b)
HClO
c)
H3ClO3
d)
HClO3
60.
sulfuric acid
a)
HSO3
b)
H2SO3
c)
H2SO4
d)
H3SO4
61.
hydrochloric acid
a)
HCl
b)
HClO
c)
H3ClO3
d)
HClO3
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