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Worksheets

Strength of Acids and Alkalis

Total questions: 10

Worksheet time: 6mins

Name
Class
Date
1.

Which pH levels indicated a strong acid?

a)

1-3

b)

4-6

c)

8-11

d)

12-14

2.

Which pH level indicates a weak alkali?

a)

1-3

b)

4-6

c)

8-11

d)

12-14

3.

Which pH level indicates a weak acid?

a)

1-3

b)

4-6

c)

8-11

d)

12-14

4.

Which pH level indicates a strong alkali?

a)

1-3

b)

4-6

c)

8-11

d)

12-14

5.

Rain water is slightly acidic. What is its pH?

a)

1.0

b)

5.6

c)

7.0

d)

8.2

6.

What does a pH scale do?

a)

A. Tells if a substance is an acid or base.

b)

B. Measures the strength and weakness of acids and alkalis.

c)

C. Guides the pH values of aqueous substances.

d)

D. Both statements A and B are correct.

7.
An acid that breaks apart completely. 0-4 on the pH scale,
a)
Strong Acid
b)
Weak Acid
c)
Weak Base
d)
Strong Base
8.
An acid that does not break apart completely.
Range from 4-7 on the pH scale.
a)
Strong Acid
b)
Strong Base
c)
Weak Acid
d)
Weak Base
9.

This solution is filled with:

a)

Weak Acid

b)

Strong Base

c)

Strong Acid

d)

Weak Base

10.

Which of the following is a weak alkali?

a)

sodium hydroxide, NaOH

b)

lithium hydroxide, LiOH

c)

ammonia, NH3

d)

barium hydroxide, Ba(OH)2