Wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

Unit 9- Acids and Bases

Total questions: 112

Worksheet time: 37mins

Name
Class
Date
1.
Acids react with
a)
water to produce bases and salts
b)
salts to produce bases and water
c)
neither bases, salts nor water
d)
bases to produce salts and water
2.

A substance is found to have the following characteristics:


Very bitter taste

Feels slippery to the touch

Produces OH- ions when dissolved in water


In what category would the substance be classified?

a)

acid

b)

base

c)

enzyme

d)

fatty acid

3.

HF is...

a)

an acid

b)

a base

c)

a salt

d)

an ionic compound

4.

HNO2

a)

a base

b)

a salt

c)

an acid

d)

an ionic compound

5.
Releases hydrogen in an aqueous solution.
a)
base
b)
strong base
c)
acid
d)
weak base
6.

KOH is ...

a)

an acid

b)

a base

c)

a salt

d)

an ionic compound

7.

The pH of a solution is 2.0. What is the [OH-] concentration?

a)

1x10-12M

b)

12 M

c)

1x10-2M

d)

2 M

8.

What is the pH of a solution where the [H+] is 1.0 x 10-11?

a)

11

b)

13

c)

14

d)

1

9.

What is the pOH of a 1 x 10-8 M solution of HNO3?

a)

8

b)

6

c)

7

d)

9

10.

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

11.
What is the pOH of a solution that has a pH of 2?
a)
10
b)
12
c)
14
d)
1
12.

What is a titration?

a)

when the moles of hydrogen ions is equal to the moles of hydroxide ions

b)

adding a known amount of solution of known concentration to determine the concentration of an unknown

c)

reaction in which an acid and a base react in an aqueous solution to produce a salt and water

d)

the extent of ionization of an acid or base

13.

Phenolophalein turns from clear to pink when the pH turns

a)

acidic

b)

basic

c)

saline

d)

ionic

14.

What completely ionizes in solution?

a)

Weak acids

b)

Strong acids

c)

Strong Salts

d)

Neutral salts

15.

What do most acids have in common?

a)

Their chemical equations start with H

b)

They are sour tasting

c)

Have a pH lower than 7

d)

All of the above

16.

Which formula represents a hydroxide ion?

a)

H3O+

b)

OH-

c)

NH4+

d)

HCO3-

17.

Select all options that are classified as acids

a)

Ca(OH)2

b)

H3AsO4

c)

HC2H3O2

d)

Ca3(PO4)2

e)

H2SO4

18.

What ion did Arrhenius attribute the properties of acidic solutions?

a)

H+

b)

OH-

c)

PO4-

d)

NH4+

19.

When you mix an acid with a base, its two products will always be...

a)

Salt and Rust

b)

Acetone and Salt

c)

Water and Ions

d)

Salt and Water

20.

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+

21.

NaOH is:

a)

an Arrhenius base

b)

an Arrhenius acid

c)

neither an acid nor a base

d)

both an acid and a base

22.
If a solution is basic which ion will be more present?
a)
H+
b)
K+
c)
OH-
d)
H-
23.

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

24.

Which of the following is a binary acid?

a)

H2SO4

b)

HNO3

c)

H2Se

d)

HC2H3O2

25.

When using the Arrhenius model, what types of ions indicate that a compound is a base?

a)

H+1

b)

OH-1

26.
A hydrogen ion, H+, is the same as a(n):
a)
neutron
b)
electron
c)
proton
d)
hydroxide ion
27.

A Bronsted Lowry acid:

a)

donates H+ to another substance

b)

accepts H+ from another substance

c)

produces H+

d)

produces OH-

28.

A Bronsted Lowry base:

a)

donates H+ to another substance

b)

accepts H+ from another substance

c)

produces H+

d)

produces OH-

29.

In the equation below, what is the Bronsted Lowry acid (donates H+)?

HCl + NH3 → Cl- + NH4+

a)

HCl

b)

NH3

c)

Cl-

d)

NH4+

30.

In the equation below, what is the Bronsted Lowry base (accepts H+)?

HCl + NH3 → Cl- + NH4+

a)

HCl

b)

NH3

c)

Cl-

d)

NH4+

31.

Which reactant in the following equation is a Bronsted Lowry acid?

H2O + HCl → H3O+ + Cl-

a)

Water

b)

Hydrogen chloride

c)

Hydronium

d)

Chloride

32.

Which product in the following equation is a conjugate base?

H2O + HCl → H3O+ + Cl-

a)

Water

b)

Hydrogen chloride

c)

Hydronium

d)

Chloride

33.

What is the Bronsted Lowry base in the following equation?

PO4-3 + HNO3 → NO3- + HPO4-2

a)

PO43-

b)

HNO3

c)

NO3-

d)

HPO42-

34.

What is the conjugate acid in the following equation?

PO4-3 + HNO3 → NO3- + HPO4-2

a)

PO43-

b)

HNO3

c)

NO3-

d)

HPO42-

35.

What is the conjugate base in the following reaction?

HCO3- + HCl → H2CO3 + Cl-

a)

HCO3-

b)

HCl

c)

H2CO3

d)

Cl-

36.

HSO4- + H2O → H3O+ +SO42-

Identify the Bronsted Lowry Acid in the above reaction.

a)

HSO4-

b)

H2O

c)

H3O+

d)

SO42-

37.

CO32- + H2O → HCO3- + OH-

Using the above reaction, which compound is the conjugate base?

a)

CO32-

b)

H2O

c)

HCO3-

d)

OH-

38.

What is the chemical name for HF?

a)

hydrofluorous acid

b)

hydrofluoric acid

c)

perfluoric acid

d)

hydroflouric acid

39.

What is the chemical name for Sr(OH)2?

a)

strontium hydroxide

b)

strontium hydride

c)

strontium (II) hydroxide

d)

strontium oxide

40.

What is the correct name for HClO3

a)

chlorous acid

b)

chloric acid

c)

hydrochloric acid

d)

hydrogen chloride

41.

What is the chemical name for HCl?

a)

hydrogen monochloride

b)

chloric acid

c)

chlorous acid

d)

hydrochloric acid

42.

What is the correct chemical name for NH4OH?

a)

ammonium hydride

b)

ammonia hydroxide

c)

ammonium hydroxide

d)

ammonia hydride

43.

The correct IUPAC name for H2CO3 is carbonic acid.

a)

True

b)

False

44.

If you have an oxyacid and it contains an -ite polyatomic ion, then acid's ending will change to _____.

a)

-ic

b)

-ous

c)

hydro-anion root-ic acid

d)

-ate

45.
What element do all acids contain?
a)
H
b)
O
c)
C
d)
He
46.
chlorous acid
a)
HClO3
b)
HClO2
c)
HClO
d)
HCl
47.
H2SO3
a)
sulfuric acid
b)
hydrosulfuric acid
c)
sulfurous acid
d)
persulfuric acid
48.
What is the formula for perchloric acid?
a)
H3ClO3
b)
H3ClO4
c)
HClO3
d)
HClO4
49.

H3N

a)

BINARY ACID

b)

TERNARY/OXYACID

c)

BASE

50.
What is the formula for Iron (III) hydroxide?
a)
Fe3(OH)
b)
Fe(OH)3
c)
3FeOH
d)
FeH
51.

What is the name for HCl?

a)

hydrogen monochloride

b)

chloric acid

c)

chlorous acid

d)

hydrochloric acid

52.

What is the name of HI?

a)

iodic acid

b)

hydroiodic acid

c)

iodous acid

d)

hypoiodous acid

53.
What is the formula for phosphorous acid?
a)
H3PO4
b)
H2PO4
c)
H3P
d)
H3PO3
54.

If you have an acid and it contains an -ate polyatomic ion, then acid's ending will change to _____.

a)

-ic acid

b)

-ous acid

c)

hydro-(root)-ic acid

d)

-ate acid

55.

What is the formula for chromium(III) hydroxide?

a)

Cr(OH)3

b)

Cr3OH

56.

What is the name for Cu(OH)2?

a)

Copper (II) hydroxide

b)

Copper (I) hydroxide

c)

Copper (II) hydride

d)

Copper (I) hydride

57.

What is the formula for sodium hydroxide?

a)

NaOH

b)

Na(OH)2

c)

NaH

58.

What is the formula for nitrous acid?

a)

HNO2

b)

HNO3

c)

H3N

59.
The pH scale is a range from:
a)
1-7
b)
0-14
c)
1-5
d)
1-20
60.
A(n) ______ is a substance with a pH less than 7
a)
Acid
b)
Alkaline
c)
Base
d)
Buffer
61.
A(n) _______ is a substance with a pH greater than 7.
a)
Base
b)
Acid
c)
Buffer
d)
Water
62.
What is the only substance with a neutral pH of 7?
a)
Milk
b)
Orange Juice
c)
Water
d)
Blood
63.
Complete the sentence.
A substance that is more basic has a _____ pH than a substance that is acidic.
a)
lower
b)
higher
c)
the same
d)
none of the above
64.

In a test of pH levels, a baking soda has a pH of 9 and bleach has a pH of 12. What is true about there relationship?

a)

Both of the solution are Bases

b)

Both of the solution are Acids

c)

The Baking soda is an acid and the Bleach is a base

d)

The baking soda is a base and the Bleach is an Acid.

65.
On the pH scale higher numbers indicate
a)
acids
b)
bases
66.
According to the pH range which substance is more acidic than lemon juice
a)
Hydrochloric acid
b)
cabbage
c)
milk
67.
Bleach is a strong base, what is the pH level of bleach?
a)
13
b)
14
c)
1
d)
2
68.

What does pH measure?

a)

the amount of hydrogen (H+) ions

b)

the amount of hydroxide (OH-) ions

c)

amount of water

d)

all of the above

69.

Which of the following is the strongest acid?

a)

1

b)

5

c)

3

d)

8

70.

Which of the following is the strongest base?

a)

4

b)

14

c)

7

d)

15

71.
What might happen if you mixed a strong acid with an equally strong base?
a)
You would see an explosive chemical reaction.
b)
The acid would destroy the base.
c)
The base would destroy the acid.
d)
You'd wind up with a pH-neutral substance.
72.
A neutralization reaction will always produce...
a)
water & salt
b)
water
c)
salt
d)
water & carbon
73.
If the [H+] of a solution is 1 x 10-2 mol/L the pH is
a)
2
b)
12
c)
-2
d)
1
74.
If the pH of a solution is 5 the [H+] is
a)
1.0 x 105  M
b)
1.0 x 109  M
c)
5.0 x 101  M
d)
1.0 x 10-5  M
75.
If the pH of a solution is 5.6 the pOH is
a)
6.5
b)
12.4
c)
8.4
d)
5.6
76.
A  pH and a pOH will add up to:
a)
0
b)
7
c)
14
d)
1.0 x 10-14
77.
if the [H+] of a solution is 1.0 x 10-2 mol/L the pH is
a)
2
b)
-2
c)
1
d)
12
78.
If the [H3O+] of a solution is 1 x 10-8 mol/L the [OH-] is
a)
1.0 x 10-6
b)
1.0 x 106
c)
1.0 x 10-8
d)
1.0 x 108
79.
If the [OH-] of a solution is 2.7 x 10-4 mol/L the pOH of the solution is
a)
10.44
b)
3.56
c)
1.00
d)
-4.43
80.
If the pH of a solution is 7 the solution is said to be
a)
Acidic
b)
Basic
c)
Neutral
d)
Tasty
81.
A solution with a [H+] of 9.4 x 10-5 mol/L is said to be
a)
Acidic
b)
Basic
c)
Neutral
d)
negative number, no solution.
82.
If the [H+] of a solution is 6.8 x 10-9 mol/L the pH is
a)
8.17
b)
8.2
c)
9.99
d)
8.62
83.
if the [H+] of a solution is 8.4 x 10-3 mol/L the pOH of the solution will be
a)
2.08
b)
11.92
c)
1.02
d)
12.98
84.
if a solution has a pOH of 5.2 the [OH-] of the solution is
a)
6 x 10 -6 M
b)
6.3 x 10 -6 M
c)
1.58 x 10-5 M
d)
2 x 10-5 M
85.
Limes have a [H3O+] of 1.3 x 10-2 mol/L.  Their pOH is
a)
1.89
b)
12.11
c)
1.03
d)
12.97
86.
Limes have a [H3O+] of 1.3 x 10-2 mol/L.  Their pOH is
a)
1.89
b)
12.11
c)
1.03
d)
12.97
87.
Identify the salt in the following equation:
Zn(OH)2 + HNO3   ---> H2O  + Zn(NO3)2
a)
Zn(OH)2
b)
HNO3
c)
H2O
d)
Zn(NO3)2
88.
In a ____ reaction, an acid and a base produce a salt and a water. 
a)
concentrated
b)
decomposition
c)
dilute
d)
neutralization
89.

Complete the following reaction:

HCl + Mg(OH)2 -->

a)

MgCl2 + H2O

b)

Mg +H2O

c)

MgCl2 + H2

d)

MgCl2 + H2O + CO2

90.

Complete the following reaction:

H3PO4 + NaOH -->

a)

Na3PO4 + H2O

b)

Na +H2O

c)

Na3PO4 + H2

d)

Na3PO4 + H2O + CO2

91.

Complete the following reaction:

HNO3 + Ca(OH)2 -->

a)

Ca(NO3)2 + H2O

b)

Ca +H2O

c)

Ca(NO3)2 + H2

d)

Ca(NO3)2 + H2O + CO2

92.
What type of reaction is displayed below?
HCl + NaOH → NaCl + H2O
a)
Neutralization
b)
Combustion
c)
Double Replacement
d)
Decomposition
93.
In a neutralization reaction, what are the products of a reaction between an acid and a base?
a)
Another acid and base
b)
Carbon dioxide and a salt
c)
Water and a salt
d)
Either two acids or two bases
94.
Zn(OH)2 is an example of a...
a)
acid
b)
base
c)
salt
95.
H3PO4 is an example of a ...
a)
acid
b)
base
c)
salt
96.
HCl + NaOH → 
a)
NaH + ClOH
b)
NaCl + H2
c)
NaCl + H2O
d)
NaCl + Cl2
97.
I am titrating 1M HCl with 1M NaOH.  I have 25mL of HCl. How much NaOH will I need?
a)
2.5mL
b)
5mL
c)
25mL
d)
50mL
98.
what is the reading on this burette?
a)
4.40mL
b)
3.50mL
c)
3.60mL
d)
4.50mL
99.
Identify the products of the chemical equation
3 LiOH + H3PO4 →
a)
Li3PO4 + 3 H2O
b)
LiPO4 + 3 H2O
c)
Li(PO4)3 + 3 H2O
d)
BOY + La + N2
100.
What acid and what base would you choose to prepare the salt potassium chlorate?
a)
KOH and HClO3
b)
KOH and HClO2
c)
HK and OHClO3
d)
HK and OHClO2
101.
A 50.0 mL sample of Ca(OH)2 is neutralized by 300.0 mL of HCl solution with a pH of 1.3. Calculate the molarity of the Ca(OH)2 solution.
a)
1.0 M
b)
0.50 M
c)
0.15 M 
d)
0.30 M
102.
For the acid-base titration combination of NaOH with 0.79 mol HCl, find the number of moles of NaOH that would be the chemically equivalent amount of HCl.
a)
0.79 mol
b)
1.6 mol
c)
0.38 mol
d)
3.2 mol
103.
Changes the color of indicators.
a)
Acids
b)
Bases
c)
All
104.
If phenolphthalein turns bright pink, it indicates
a)
an acid 
b)
a base
c)
a neutral
105.
Which of the following is a conjugate acid/base pair?
a)
HCl/OCl-
b)
H2SO4/SO42-
c)
NH4+/NH3
d)
H3O+/OH-
106.
An indicator will ______________ when it is in contact with an acid or base
a)
Bubble
b)
Form a new substance
c)
Change color
d)
Stay the same color
107.
The pH of a strong acid would be:
a)
1-2
b)
5-6
c)
8-9
d)
12-13
108.
The pH of a strong base would be:
a)
1-2
b)
5-6
c)
8-9
d)
13-14
109.
The pH of a strong base would be:
a)
1-2
b)
5-6
c)
8-9
d)
13-14
110.

A solution containing methyl red will be ______________ when at a pH=7

a)

yellow

b)

red

c)

orange

111.

When mixing a strong acid with a strong base, _________________ should be used

a)

bromothymol blue

b)

methyl red

c)

phenolphthalein

112.

What indicator should be used for a titration of NaOH with HF?

a)

methyl red

b)

bromothymol blue

c)

phenolphthalein

Similar Resources on Wayground

A & P Fall 2025 Semester Test

113 questions

A & P Fall 2025 Semester Test

quiz

Worksheet

•

11th Grade

Unit 4: Cell Cycle Test Review

112 questions

Unit 4: Cell Cycle Test Review

quiz

Worksheet

•

9th - 12th Grade

Biology Review

114 questions

Biology Review

quiz

Worksheet

•

10th Grade

Elements & Polyatomics Review

117 questions

Elements & Polyatomics Review

quiz

Worksheet

•

11th - 12th Grade

Earth Science Final

110 questions

Earth Science Final

quiz

Worksheet

•

11th Grade

Unit 3 Test Review

107 questions

Unit 3 Test Review

quiz

Worksheet

•

10th Grade

Physical Science Unit 8- Energy

110 questions

Physical Science Unit 8- Energy

quiz

Worksheet

•

9th - 12th Grade

High School Science ISASP Review

108 questions

High School Science ISASP Review

quiz

Worksheet

•

9th - 10th Grade