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Worksheets

Strong vs Weak Acids and Bases

Total questions: 20

Worksheet time: 10mins

Name
Class
Date
1.

Which of the following values would represent the pH of a strong base?

a)

1

b)

8

c)

7

d)

13

2.

Complete the definition below:

Acids are....

a)

hydrogen donors.

b)

hydrogen acceptors.

c)

proton donors.

d)

proton acceptors.

3.

Acids which dissociate almost completely in aqueous solutions are known as:

a)

Dilute acids

b)

Strong acids

c)

Weak acids

d)

Concentrated acids

4.

Acids react with active metals to liberate:

a)

Oxygen

b)

Carbon dioxide

c)

Nitrogen

d)

Hydrogen

5.
When dissolved in water, bases produce:
a)
acids
b)
salts
c)
hydrogen ions
d)
hydroxide ions
6.

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

a)

H+

b)

K+

c)

OH-

d)

H-

7.

This ion is responsible for the properties of acids

a)

Sodium ion

b)

Hydrogen ion

c)

Hydroxide ion

d)

Oxide ion

8.

Predict the products for the following reaction: LiOH + H2SO-->

(Hint: it is a neutralization reaction)

a)

LiSO4 + H2O

b)
LiSO4 + H2(OH)
c)

Li2SO4 + H2O

d)
Li2SO4 + H2(OH)
9.
What color does acid turn litmus paper?
a)
It turns litmus paper purple.
b)
It turns red litmus paper blue.
c)
It turns blue litmus paper blue.
d)
It turns blue litmus paper red.
10.
What are the formulas for the following?
--sulfuric acid--
--nitric acid--
a)
H2SO, HNO
b)
H2SO3, HNO3
c)
H2S, H3N
d)
H2SO4, HNO3
11.
Strong acids and bases...
a)

do not dissociate into ions (non-electrolyte)

b)

partially dissociate into ions (weak electrolyte)

c)

completely dissociate into ions (non-electrolyte)

d)

completely dissociate into ions (strong electrolyte)

12.

A substance that does not dissociate completely. Ranges from 4-7 on the pH scale.

a)
Strong Acid
b)
Strong Base
c)
Weak Acid
d)
Weak Base
13.

Hydrochloric (HCl) is a

a)

Weak Acid

b)

Weak Base

c)

Strong Acid

d)

Strong base

14.

Sodium hydroxide (NaOH) is a

a)

Weak Acid

b)

Weak Base

c)

Strong Acid

d)

Strong base

15.

Methanoic (HCOOH) is a

a)

Weak Acid

b)

Weak Base

c)

Strong Acid

d)

Strong base

16.

Ammonia (NH3) is a

a)

Weak Acid

b)

Weak Base

c)

Strong Acid

d)

Strong base

17.

When a metal carbonate reacts with an acid, what will the products always be?

a)

A salt, water and oxygen

b)

A salt, water and carbon dioxide

c)

Water and hydrogen

d)

A salt and water

18.

When comparing a strong and weak acid of the same concentration, the strong acid will have...(choose 2 answers)

a)

A higher conductivity

b)

A lower conductivity

c)

A faster rate of reaction

d)

A slower rate of reaction

19.

When comparing a strong and weak acid of the same concentration, the strong acid will have...(choose 2 answers)

a)

A higher pH

b)

A lower pH

c)

a smaller temperature change on neutralisation with a strong base

d)

a bigger temperature change on neutralisation with a strong base

20.

A ___________ is a solution that is resistant to large changes in pH.

a)

pH

b)

pOH

c)

buffer

d)

electrolyte