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Worksheets

Oxides, acids, bases, salts

Total questions: 25

Worksheet time: 15mins

Name
Class
Date
1.

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)

2.

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)

3.

Is pure water acidic, basic, or neutral?

a)

Acidic

b)

Basic

c)

Neutral

4.

sulfuric acid

a)

HSO3

b)

H2SO3

c)

H2SO4

d)

H3SO4

5.
Mg(OH)2
a)
magnesium hydroxide acid
b)
hydromagnesium acid
c)
magnesium oxygen hydride
d)
magnesium hydroxide
6.
In a neutralization reaction, what are the products of a reaction between an acid and a base?
a)
Another acid and base
b)
Carbon dioxide and a salt
c)
Water and a salt
d)
Either two acids or two bases
7.

A substance is found to have the following characteristics:


Very bitter taste

Feels soapy to the touch

Produces OH- ions when dissolved in water


In what category would the substance be classified?

a)

acid

b)

base

8.

Basic oxide

a)

BaO

b)

P2O5

c)

ZnO

d)

CO2

9.
How are metal oxides formed?
a)
When metals react with oxide.
b)
When metals react with water.
c)
When metals react with air.
d)
When metals react with oxygen.
10.
Which of the following reactions produces calcium oxide?
a)
calcium and oxide
b)
calcium and water
c)
calcium and air
d)
calcium and oxygen
11.

Which is NOT an amphoteric oxide?

a)

zinc oxide

b)

aluminium oxide

c)

lead (II) oxid

d)

sodium oxide

12.

Which of the followings is an acidic oxide?

a)

SO2

b)

H2O

c)

CO

d)

ZnO

13.

Which oxide is able to react with HNO3?

a)

MgO

b)

CO2

c)

NO2

d)

CO

14.

Sulfuric acid reacts with sodium hydroxide to form salt X and water. Name the salt.

a)

sodium sulfate

b)

sodium nitrate

c)

sodium chloride

15.

Potassium carbonate reacts with an acid Y to form potassium nitrate, water and carbon dioxide. What is the acid used for this reaction?

a)

HNO3

b)

H2SO4

c)

HCl

16.
To protect tooth decay we are advised to brush our teeth regurlarly.The toothpaste is
a)
acidic
b)
neutral
c)
basic
d)
corrosive
17.

Hydrochloric acid reacts to form ........ salts.

a)

chloride

b)

hydrochloride

c)

nitrate

d)

sulfate

18.

Nitric acid reacts to form ........ salts.

a)

chloride

b)

nitrite

c)

nitrate

d)

sulfate

19.

Sulfuric acid reacts to form ........ salts.

a)

chloride

b)

nitrite

c)

sulfite

d)

sulfate

20.

Acids can react with a/an ......

a)

carbonate

b)

reactive metal

c)

oxide

d)

hydroxide

21.

acid + carbonate -> salt + ............

a)

carbon dioxide + water

b)

hydrogen

c)

ammonia + water

d)

water

22.

Oxides and hydroxides are

a)

bases

b)

carbonates

c)

acids

d)

metals

23.

Amphoteric oxides are substances that

a)

Reacts with acids only

b)

Reacts with bases only

c)

Reacts with acids and bases

d)

Do not react with acids or bases

24.

Which element must all oxides contain at least one atom of?

a)

copper

b)

oxygen

c)

carbon

d)

helium

25.

Which of the following oxides is most likely to be an acidic oxide?

a)

CuO

b)

Na2O

c)

MgO

d)

CO2