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acids and bases

Total questions: 124

Worksheet time: 3hrs 42mins

Name
Class
Date
1.

Which of the following statements is true concerning acids and bases?

a)

acids and bases don't react with each other

b)

acids mixed with bases neutralize each other

c)

acids mixed with bases make stronger bases

d)

acids mixed with bases make stronger acids

2.

True or false: bases are sometimes called alkaline.

a)

True

b)

False

3.

Which is the correct set of acid properties, as described by Boyle:

a)

sour taste, corrosive, change litmus from red to blue

b)

sour taste, corrosive, change litmus from blue to red

c)

sweet taste, slippery, change litmus from blue to red

d)

sour taste, slippery, change litmus from blue to red

4.

Neutral solutions have a pH of:

a)

0

b)

1

c)

7

d)

14

5.

True or false: a neutral solution has equal amounts of H+ and OH-.

a)

True

b)

False

6.

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)

7.

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)

8.

Is laundry detergent an acid or a base?

a)

Acid

b)

Base

c)

Neither (Neutral)

9.

Ammonia is found in many household products, including window cleaner. What is the pH of ammonia?

a)

It's acidic.

b)

It's basic.

c)

It's neutral.

10.

Is pure water acidic, basic, or neutral?

a)

Acidic

b)

Basic

c)

Neutral

11.

Water found near sources of air pollution tends to be:

a)

Acidic.

b)

Basic.

c)

Neither. Air pollution doesn't alter the pH of water.

12.

Vinegar is an example of:

a)

An acid.

b)

A base.

c)

Neither an acid nor a base.

13.

Tums and Milk of Magnesia are examples of:

a)

Acids

b)

Antacids

c)

Neither acids nor bases.

d)

Both antacids and bases.

14.

Stronger acids have a pH closer to...

a)

7

b)

0

c)

14

d)

9

15.

Weaker bases have a pH closer to...

a)

8

b)

0

c)

14

d)

4

16.

A pH level of 7 indicates

a)

acid

b)

base

c)

neutral

d)

none of the following

17.

The pH scale is a range from:

a)

1-7

b)

0-14

c)

1-5

d)

1-14

18.
A(n) ______ is a substance with a pH less than 7
a)
Acid
b)
Alkaline
c)
Base
d)
Buffer
19.
A solution with a pH of 8.6 would be...
a)
Acid
b)
Base
c)
Neutral
d)
Acid and Base
20.

Which of the following is an acid?

a)

soap

b)

baking soda

c)

orange juice

d)

pure water

21.

Which property is not associated with acids?

a)

Sour taste

b)

strong acids can burn you

c)

turns litmus paper blue

d)

reacts with metals

22.

Ammonia has a pH of 11. Ammonia is __________.

a)

an acid

b)

a base

c)

an element

d)

a metal

23.

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

24.
Ranging from 0 to 14, a pH value indicates how acidic or basic a solution is.  Which of these pH values would be a strong acid?
a)
2
b)
6
c)
9
d)
13
25.

What type of paper is used to test for acids and bases?

a)

Red paper

b)

Blue paper

c)

Lined paper

d)

Litmus paper

26.

Tastes sour

a)

acid

b)

base

c)

neutral

d)

both acids & bases

27.

You test a solution with pH paper, and the paper turns blue. The solution is ______.

a)

neutral

b)

an acid

c)

a base

d)

an acid & a base

28.

What would be considered the strongest base?

a)

8

b)

14

c)

7.8

d)

11.6

29.

Tastes bitter.

a)

Acids

b)

Bases

c)

None of the following

d)

Acids & Bases

30.

These can burn you if they are strong enough.

a)

Acids

b)

Bases

c)

Water

d)

Acids & Bases

31.

A substance that is 3 on the pH scale would be a(n):

a)

acid

b)

base

c)

neutral

d)

solute

32.
Which one of the following is an example of a base?
a)
orange juice
b)
dish soap
c)
vinegar
d)
lemons
33.
A substance that changes color when mixed with an acid or base is a(n) ___.
a)
indicator
b)
neutralizer
c)
corrosive
d)
electricity
34.
Since some acids seemingly "eat away" certain substances, acids are ____.
a)
bitter
b)
sliipery
c)
corrosive
d)
weak
35.
What color does litmus paper turn in the presence of an acid?
a)
blue
b)
black
c)
green
d)
red
36.
Bleach and oven cleaner are:
a)
strong acids
b)
weak acids
c)
strong bases
d)
weak bases
37.
Which of the following is NOT a characteristic of an acid?
a)
sour taste
b)
corrosive
c)
it feels slippery
d)
it can burn the skin
38.
A substance that is a 10 on the pH scale would be a(n) ____.
a)
acid
b)
neutral
c)
base
d)
indicator
39.
Which of the following is neutral?
a)
milk
b)
eggs
c)
gummy worms
d)
pure water
40.

Which is the correct set of acid properties?

a)

sour taste, corrosive, change litmus from red to blue

b)

sour taste, corrosive, change litmus from blue to red

c)

sweet taste, slippery, change litmus from blue to red

d)

sour taste, slippery, change litmus from blue to red

41.
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.
d)
acidic
42.
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
43.
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
a)
is a base.
b)
has a neutral pH.
c)
is an acid.
d)
does not have a pH.
44.
Litmus paper can be used to determine the _______ of a substance.
a)
relative volume
b)
temperature
c)
relative pH
d)
chemical formula
45.
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?
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.
46.
 Which of the following is an acid?
a)
shampoo
b)
baking soda
c)
orange juice
d)
water
47.
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
48.
When using pH paper, the pH of a solution can be determined by looking at the _______ of the paper.
a)
texture
b)
color
c)
length
d)
mass
49.
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
50.
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
51.

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

52.
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
53.

HF is...

a)

an acid

b)

a base

c)

a salt

d)

an ionic compound

54.

HNO2

a)

a base

b)

a salt

c)

an acid

d)

an ionic compound

55.
Releases hydrogen in an aqueous solution.
a)
base
b)
strong base
c)
acid
d)
weak base
56.

KOH is ...

a)

an acid

b)

a base

c)

a salt

d)

an ionic compound

57.

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

58.
What is the pOH of a solution that has a pH of 2?
a)
10
b)
12
c)
14
d)
1
59.

Phenolophalein turns from clear to pink when the pH turns

a)

acidic

b)

basic

c)

saline

d)

ionic

60.

What completely ionizes in solution?

a)

Weak acids

b)

Strong acids

c)

Strong Salts

d)

Neutral salts

61.

If I add more chicken soup to this setup, what will happen to the pH?

a)

It will increase and get closer to 7

b)

It will decrease and get closer to 0

c)

It will stay the same and not change

62.

If I add more water to this setup, what will happen to the pH?

a)

It will increase and get closer to 7

b)

It will decrease and get closert to 0

c)

It will stay the same and not change

63.

Milk is a very weak acid. What might its pH value be?

a)

6.5

b)

7.8

c)

4.2

d)

12.2

64.

Which of the following are properties of acids?

a)

They conduct electricity when dissolved in water

b)

They taste sour

c)

They react with metals to produce hydrogen gas

d)

All of the answer choices are correct

65.

Which of the following is an acid?

a)

vinegar

b)

bleach

c)

sugar in water

d)

starch in water

e)

toothpaste in water

66.

An acid is a solution that contains __________ ions dissolved in water.

a)

positive

b)

negative

67.

The pH value of an acid represents its __________ of positive ions in the solution

a)

amount

b)

concentration

c)

color

d)

charge

68.

Bases have many uses. They are mainly used to make

a)

cleaning products

b)

soaps

c)

concrete

d)

all of the answer choices

69.

The higher the concentration of negative (hydroxide) ions in the solution, the stronger the base is.

a)

True

b)

False

70.

Ocean water is only slightly basic. What might its pH value be?

a)

5

b)

8

c)

12

d)

2

71.

If the substance is neutral, what would the pH be?11

a)

3

b)

5

c)

7

d)

9

e)

11

72.
Explain what happens when a strong acid and a strong base are poured into the same container.
a)
they form separate layers
b)
they mix physically but not chemically
c)
they break apart into separate elements
d)
they react chemically to form a salt
73.
When dissolved in water, bases produce:
a)
acids
b)
salts
c)
hydrogen ions
d)
hydroxide ions
74.
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
75.
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
76.
The pH of vinegar is 2.5.  Vinegar is a _____________.
a)
strong acid
b)
strong base
c)
weak base
d)
weak acid
77.
Which type of ion does a base produce when it is dissolved in water?
a)
oxide
b)
oxygen
c)
hydrogen
d)
hydroxide
78.
phosphorous acid
a)
H3PO4
b)
H2PO4
c)
H3P
d)
H3PO3
79.
bromic acid
a)
HBr
b)
HBrO2
c)
HBrO3
d)
H3BrO3
80.
hydrochloric acid
a)
HCl
b)
HClO
c)
H3ClO3
d)
HClO3
81.
sulfuric acid
a)
HSO3
b)
H2SO3
c)
H2SO4
d)
H3SO4
82.
 H3PO4
a)
hydrophosphoric acid
b)
phosphorous acid
c)
phosphoric acid
d)
phosphoric hydroxide
83.
Mg(OH)2
a)
magnesium hydroxide acid
b)
hydromagnesium acid
c)
magnesium oxygen hydride
d)
magnesium hydroxide
84.
Barium hydroxide
a)
BaOH
b)
Ba2OH
c)
Ba(OH)2
85.
Hydroiodic acid
a)
H2I2
b)
H1I1
c)
HI
86.
Cu(OH)2
a)
Copper (II) hydroxide
b)
Copper (I) hydroxide
c)
Copper (II) hydride
d)
Copper (I) hydride
87.
HBr
a)
hydrogen bromine acid
b)
hydrobromide acid
c)
hydrobromic acid
88.
Nitrous Acid
a)
HNO2
b)
H2NO2
c)
HNO3
89.
Select the name for the following acid: H2S
a)
Hydrosulfuric acid
b)
Sulfuric acid
c)
Sulfurous
90.
Is the following compound an acid or a base? 
HF
a)
Acid
b)
Base
91.
Is the following compound an acid or a base? 
Ca(OH)2
a)
Acid
b)
Base
92.
Is the following compound an acid or a base? 
Ca(OH)2
a)
Acid
b)
Base
93.
Potassium hydroxide
a)
KOH
b)
K2OH
c)
k(OH)2
94.
What determines the number of hydrogens in your acid?
a)
there are always just one
b)
its the same as the charge of hydrogen
c)
its the same as the charge of the anion
d)
magic
95.
Water is neutral because the number of hydrogen and hydroxide ions is _________.
a)
the same
b)
different
96.
What is the name of the compound with the formula NaCl? 
a)
chlorine sodiate
b)
sodium chlorate
c)
sodium chloride
d)
sodium dichloride
97.
Bases form hydrogen ions (H+ ) when dissolved in water.
a)
True
b)
False
98.

Indigestion and heartburn is causes by an over production of stomach acid. If you were suffering from indigestion, what types of foods should you avoid?

a)

Foods that have a pH BELOW 7.

b)

Food that have a pH ABOVE 7.

c)

Food that have a pH of 7.

d)

Food has no impact on indigestion.

99.

The table shows the pH values of a sample of substances. According to the substances, which is most acidic.

a)

Stomach acid

b)

Oven cleaner

c)

Eggs

d)

Milk

100.

The table shows the pH of a sample of substances. Which of the basic items would be the best conductor of electricity.

a)

Stomach acid

b)

Oven cleaner

c)

Eggs

d)

Milk

101.

Acids will neutralize a base, and bases will neutralize acids. If you add a base to a solution containing a strong acid, what will happen to the pH of the solution?

a)

The pH will increase.

b)

The pH will decrease.

c)

The pH will stay the same.

102.

After studying acids and bases you notice something in your kitchen has a bitter taste and is slippery to the touch. Since you don't have pH strips to test this substance you can use the properties to make an educated guess that this substance is...

a)

...an acid.

b)

...a base.

c)

...a salt.

d)

...a hydrate.

103.

We used pH strips as the indicators in our household acid and base substance test. We also talked about litmus papers as another type of indicator. What property changes on the pH strip or litmus paper to show if an substance is an acid or base?

a)

Smell.

b)

Color.

c)

Concentration.

d)

Taste.

104.

When you put an acidic solution into a basic solution...

a)

...it creates a stronger base.

b)

...they neutralize each other and the pH changes to closer to 7 (neutral).

c)

...it explodes.

d)

...it creates a stronger acid.

105.
pH stands for:
a)
Potency of hydrogen
b)
Plurality of hydrogen
c)
Potential of hydrogen
d)
Pleurisy of hydrogen
106.

What is the colour of phenolphthalein an acid?

a)

Pink

b)

Yellow

c)

Orange

d)

Colourless

107.

What is the colour of phenolphthalein in a base ?

a)

Pink

b)

Blue

c)

Red

d)

Colourless

108.

Which of the following is a neutral substance?

a)

Lemon juice

b)

Sodium chloride solution

c)

Hydrochloric acid

d)

Ammonia solution

109.

What are the products formed when sodium hydroxide reacts with dilute hydrochloric acid?

a)

Sodium + Chlorine

b)

Sodium chloride + Hydrogen

c)

Potassium chloride + Hydrogen

d)

Sodium chloride + Carbon (IV) oxide

110.

Name the gas formed when zinc reacts with hydrochloric acid.

a)

Nitrogen

b)

Hydrogen

c)

Oxygen

d)

Carbon (IV) oxide

111.

What is an Arrhenius acid?

a)

Proton Donor

b)

Proton Acceptor

c)

Hydrogen Ion containing Compound

d)

Hydroxide ion containing compound

112.
A  pH and a pOH will add up to:
a)
0
b)
7
c)
14
d)
1.0 x 10-14
113.

Which of the following is an Arrhenius Acid?

a)

LiOH

b)

CO32-

c)

OH-

d)

H3PO4

114.

How do Bronsted-Lowry conjugate acid-base pairs differ?

a)

differ by one H+

b)

Differ by one OH-

c)

Differ by two H+

d)

Differ by some number of H+

115.
When dissolved in water, bases produce:
a)
acids
b)
salts
c)
hydrogen ions
d)
hydroxide ions
116.
Which of the following is transferred between a conjugate acid-base pair?
a)
An Electron
b)
A OH- ion
c)
A Proton
d)
A Neutron
117.
What is the conjugate acid in the following equation?
a)
PO43- 
b)
HNO3 
c)
NO3- 
d)
HPO42-
118.
What is the conjugate base in the following reaction?
a)
HCO3- 
b)
HCl
c)
 H2CO3 
d)
Cl-
119.

Given the reaction above, which compound is the bronsted-Lowry Acid?

a)

NH3

b)

HCl

c)

NH4+

d)

Cl-

120.

Given the reaction above, which compound is the bronsted-Lowry Conjugate base, if HCl is the acid?

a)

NH3

b)

NH4+

c)

Cl-

121.
If the solution of Al(OH)3 has a pH of 11.5 and a pOH of 2.5. Is it an acid, base, or neutral?
a)
acid
b)
base
c)
neutral
122.
If the pH of a solution is 5.6 the pOH is
a)
6.5
b)
12.4
c)
8.4
d)
5.6
123.

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

124.

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)

1.25 x 10-5 M

d)

4.9 x 10-10 M

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