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Acids and bases review

Total questions: 41

Worksheet time: 48mins

Name
Class
Date
1.
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 _______.
a)
Acids; pH less than 7
b)
Acids; pH greater than 7
c)
Bases; pH greater than 7
d)
Bases; pH less than 7
2.
Which of the following is a base?
a)
orange juice
b)
water
c)
vinegar
d)
dishwashing detergent
3.
 Which of the following is an acid?
a)
shampoo
b)
baking soda
c)
orange juice
d)
water
4.
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
5.
Which type of ion does a base produce when it is dissolved in water?
a)
oxide
b)
oxygen
c)
hydrogen
d)
hydroxide
6.
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
7.
On the pH scale what numbers are bases?
a)
8-14
b)
0-7
c)
7
d)
1
8.
On the pH scale what numbers are acids?
a)

8-14

b)

0-6

c)

7

d)

1

9.
On the pH scale what numbers are neutrals?
a)
8-14
b)
0-7
c)
7
d)
1
10.
The pH scale measures...
a)
...the strength of an acid.
b)
...the strength of hydrogen ions.
c)
...the concentration of hydrogen ions.
d)
...the concentration of an acid
11.

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.

12.

A base is a substance

a)

That releases OH- ions when dissolved in water

b)

That releases H+ ions when dissolved in water

c)

Does not release any ions when dissolved in water

d)

None of the above

13.
According to the pH range which substance is more acidic than lemon juice
a)
Hydrochloric acid
b)
cabbage
c)
milk
14.
Which of the following is a base?
a)
orange juice
b)
water
c)
vinegar
d)
dishwashing detergent
15.
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
16.

HNO2

a)

a base

b)

a salt

c)

an acid

d)

an ionic compound

17.
Releases hydrogen in an aqueous solution.
a)
base
b)
strong base
c)
acid
d)
weak base
18.

KOH is ...

a)

an acid

b)

a base

c)

a salt

d)

an ionic compound

19.
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
20.

Which of the following will conduct electricity? Select all that apply

a)

Acidic solutions

b)

Basic solutions

c)

Ionic solutions

d)

Neutral covalent solutions

21.

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 BTB to her test tube and gently moves the tube from side to side. A few moments later, the chemical in the test tube turns yellow. 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.

22.
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.
23.
Which is the stronger acid?
a)
pH 1
b)
pH 4
c)
pH 8
d)
pH 13
24.
Turns litmus red
a)
Acids
b)
Bases
c)
All
25.
When put into a basic solution, red litmus paper ________.
a)
stays red
b)
turns blue
c)
turns magenta
d)
turns violet
26.
Ammonia has a pH of 12.  Ammonia is __________.
a)
an acid
b)
a base
c)
an element
d)
a metal
27.

The pH of a chemical is 1.5.  This chemical is a _____________.

a)

strong acid

b)

strong base

c)

weak base

d)

weak acid

28.
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
29.
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
30.
What is the pH of water?
a)
0
b)
4
c)
7
d)
14
31.
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
32.
What does a pH of 1 indicate about a liquid?
a)
it is a very strong base
b)
it is a weak base 
c)
it is a weak acid
d)
it is a strong acid
33.
Which of these pH values would indicate that a solution is a weak base?
a)
4
b)
5.6
c)
8
d)
13
34.
When dissolved in water, acids produce:
a)
bases
b)
salts
c)
hydrogen ions
d)
hydroxide ions
35.
A neutralization reaction will (almost) always produce...
a)
water & salt
b)
water
c)
salt
d)
water & carbon
36.
If there is excess hydrogen ions, the solution will be...
a)
acidic
b)
basic
37.
If there is excess hydroxide ions, the solution will be...
a)
acidic
b)
basic
38.
In a ____ reaction, an acid and a base produce a salt and a water. 
a)
concentrated
b)
decomposition
c)
dilute
d)
neutralization
39.

Complete the following reaction:

H3PO4 + NaOH -->

a)

Na3PO4 + H2O

b)

Na +H2O

c)

Na3PO4 + H2

d)

Na3PO4 + H2O + CO2

40.

What is the molecular mass of fluorine gas (F2)?

a)

19 g

b)

38 a.m.u

c)

38 g

d)

19 a.m.u

41.

What is the molecular mass of CO2?

a)

12.01 amu

b)

16.00 amu

c)

44.01 amu

d)

44 g

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