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Acids and Bases

Total questions: 56

Worksheet time: 59mins

Name
Class
Date
1.

What is the pH range of an acid?

a)

4-6

b)

1-7

c)

1-6

d)

8-14

2.

What would happen to blue litmus paper if it came into contact with an acid?

a)

It would turn red

b)

It would turn green

c)

It would stay blue

d)

It would turn pink

3.

Which of the following pH values would be the strongest acid?

a)

1

b)

3

c)

4

d)

6

4.

Which of the following pH values would be the weakest acid?

a)

1

b)

3

c)

5

d)

6

5.

Which of the following chemical formulas is NOT an acid?

a)

HBr

b)

HF

c)

HCl

d)

LiOH

6.

What would happen to red litmus paper when it encounters a base?

a)

It turns blue

b)

It stays red

c)

It turns purple

d)

It turns green

7.

HF is...

a)

an acid

b)

a base

c)

a salt

d)

an ionic compound

8.

KOH is ...

a)

an acid

b)

a base

c)

a salt

d)

an ionic compound

9.
What would be considered the weakest base? 
a)
8
b)
14
c)

7

d)

11

10.
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
11.
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
12.

If a solution is basic which ion will be more present?

a)

H+

b)

K+

c)

OH-

d)

H-

13.

If a solution is basic which ion will be more present?

a)

H+

b)

K+

c)

OH-

d)

H-

14.

If a solution is basic which ion will be more present?

a)

H+

b)

K+

c)

OH-

d)

H-

15.

What is the pH of a 0.01 M HCl solution?

a)

1

b)

2

c)

3

d)

4

16.

Which pH represents the solution with the highest Hydrogen ion concentration

a)

pH=1

b)

pH=3

c)

pH=7

d)

pH=11

17.

Which pH represents the solution with the lowest Hydroxide ion concentration

a)

pH=1

b)

pH=3

c)

pH=7

d)

pH=11

18.

Which compound represents an base?

a)

NaOH

b)

HCl 

c)

CH2OH

d)

NaCl

19.

According to the alternate acid base theory, a compound is a base if it

a)

donates a hydrogen ion

b)

accepts a hydrogen ion

c)

donates a hydroxide ion

d)

accepts a hydroxide ion

20.

According to the alternate acid base theory, a compound is a base if it

a)

donates a hydrogen ion

b)

accepts a hydrogen ion

c)

donates a hydroxide ion

d)

accepts a hydroxide ion

21.

According to the alternate acid base theory, a compound is an acid if it

a)

donates a hydrogen ion

b)

accepts a hydrogen ion

c)

donates a hydroxide ion

d)

accepts a hydroxide ion

22.

According to the alternate acid base theory, a compound is an acid if it

a)

donates a hydrogen ion

b)

accepts a hydrogen ion

c)

donates a hydroxide ion

d)

accepts a hydroxide ion

23.

A solution has a pH of 6.2, if its hydrogen ion concentration is increased by 10 times, what would its new pH be?

a)

5.2

b)

7.2

c)

8.2

d)

4.2

24.

A solution has a pH of 6.2, if its hydrogen ion concentration is decreased by 100 times, what would its new pH be?

a)

5.2

b)

7.2

c)

8.2

d)

4.2

25.

Which of the compounds below is an electrolyte?

a)

LiCl

b)

CH4

c)

CH3OH

d)

Na

26.

Which of the compounds below is an electrolyte?

a)

Li

b)

CH4

c)

CH3OH

d)

NaOH

27.

The indicator bromthymol blue is added to a solution with a pH of 10 what color will it turn?

a)

yellow

b)

blue

c)

pink

d)

orange

28.

The indicator litmus is added to a solution with a pH of 3.8 what color will it turn?

a)

yellow

b)

blue

c)

red

d)

orange

29.

The indicator bromcresol green is added to a solution with a pH of 5.6 what color will it turn?

a)

yellow

b)

blue

c)

red

d)

orange

30.

When the pH of a solution changes from a pH of 9 to a pH of 7, the hydrogen ion concentration is?

a)

0.01 of the original content

b)

0.1 of the original content

c)

10 times the original content

d)

100 times the original content

31.

When the pH of a solution changes from a pH of 8 to a pH of 9, the hydroxide ion concentration is?

a)

0.01 of the original content

b)

0.1 of the original content

c)

10 times the original content

d)

100 times the original content

32.

Which of the following solutions will turn orange if methyl orange is added to it?

a)

1.0 M of HCl

b)

1.0M of NaOH

c)

.1 M of KCl

d)

10 M of LiOH

33.

Which represents a hydroxide ion?

a)

H+

b)

OH-

c)

Na+

d)

Cl-

34.
On the pH scale,______
a)
A. A neutral solution has a value of 14
b)
B. Lower values indicate greater acidity
c)
C. Higher values indicate greater acidity
d)
D. All of the above
e)
E. None of the above
35.
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
36.
What would be considered the weakest base? 
a)
8
b)
14
c)
7.8
d)
11.6
37.
Acids are found on the pH scale between which numbers?
a)
0-7
b)
7
c)
7-14
d)
19-42
38.
Turns litmus red
a)
Acids
b)
Bases
c)
All
39.

According to the pH scale, which item is more acidic than lemons?

a)

battery

b)

vinegar

c)

milk

d)

blood

40.

According to the pH scale, which item is a stronger base than soap?

a)

baking soda

b)

ammonia solution

c)

tomato

d)

bleach

41.

KOH is ...

a)

an acid

b)

a base

c)

a salt

d)

an ionic compound

42.

HF is...

a)

an acid

b)

a base

c)

a salt

d)

an ionic compound

43.
hydrochloric acid
a)
HCl
b)
HClO
c)
H3ClO3
d)
HClO3
44.
sulfuric acid
a)
HSO3
b)
H2SO3
c)
H2SO4
d)
H3SO4
45.

A pH of 3 is how many times more acidic than a pH of 5?

a)

2

b)

20

c)

10

d)

100

46.

A pH of 8 is how many times more acidic than a pH of 11?

a)

3

b)

30

c)

100

d)

1000

47.

A substance with a pH of 11 is which of the following?

a)

acid

b)

base

c)

neutral

48.

As the number of hydrogen ions (H+) decreases, the pH ___________.

a)

increases

b)

decreases

c)

stays the same

49.

As the number of hydrogen ions (H+) decreases, the pH ___________.

a)

increases

b)

decreases

c)

stays the same

50.

As the number of hydrogen ions (H+) decreases, the pH ___________.

a)

increases

b)

decreases

c)

stays the same

51.

A Bronsted Lowry acid:

a)

donates H+ to another substance

b)

accepts H+ from another substance

c)

produces H+

d)

produces OH-

52.

A Bronsted Lowry base:

a)

donates H+ to another substance

b)

accepts H+ from another substance

c)

produces H+

d)

produces OH-

53.

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

H2O + HCl → H3O+ + Cl-

a)

water

b)

hydrochloric acid

c)

hydronium

d)

chloride

54.

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

HCl + NH3 → Cl- + NH4+

a)

HCl

b)

NH3

c)

Cl-

d)

NH4+

55.

Which of the following is an Arrhenius Acid?

a)

LiOH

b)

CO32-

c)

OH-

d)

H3PO4

56.

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

a)

NH3

b)

HCl

c)

NH4+

d)

Cl-

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