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Grade 7: Oxides, hydroxide, sulfate and carbonate

Total questions: 35

Worksheet time: 16mins

Name
Class
Date
1.
If the mineral's chemical formula is BaSO4 which mineral group is the mineral in? 
a)
silicates
b)
carbonates
c)
halides
d)
sulfates
2.

What elements are in sulfates?

a)

nonmetals

b)

metals

c)

sulfur and a metal

d)

sulfur, oxygen and metals

3.
What elements are in oxides?
a)
only oxygen
b)
oxygen and a metal
c)
metals
d)
nonmetals
4.
If the mineral's chemical formula is CaCO3, what group is the mineral in? 
a)
silicates
b)
carbonates
c)
sulfates
d)
oxides
5.
If the mineral's chemical formula is Cu2O (Copper Oxide), what mineral group is the mineral in?
a)
oxides
b)
halides
c)
carbonates
d)
silicates
6.
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.
7.
Which of the following is the product of the reaction of aluminium and oxygen?
a)
aluminium oxide.
b)
metal oxide
c)
aluminium ore
d)
aluminium and oxygen
8.

What type of oxide is:

Nitrogen Dioxide

a)

Amphoteric Oxide

b)

Basic Oxide

c)

Neutral Oxide

d)

Acidic Oxide

9.

What type of oxide is:

Copper (II) Oxide

a)

Amphoteric Oxide

b)

Basic Oxide

c)

Neutral Oxide

d)

Acidic Oxide

10.

What type of oxide is:

Carbon Dioxide

a)

Amphoteric Oxide

b)

Basic Oxide

c)

Neutral Oxide

d)

Acidic Oxide

11.

What is the test to prove the presence of oxygen?

a)

Add a lit splint and it relights

b)

Add a lit splint and it burns with a pop

c)

Add a glowing splint and it relights

d)

Add a glowing splint and it burns with a pop

12.

A basic oxide reacts with an acid to give

a)

salt

b)

carbon dioxide

c)

water

d)

hydrogen

13.

A substance that contains only one type of atom is a(n)

a)

compound

b)

element

c)

mixture

d)

solution

14.
This picture represents which of the following?
a)
element
b)
compound
c)
mixture
15.
This picture represents which of the following?
a)
Element
b)
Compound
c)
Mixture
16.
This picture represents which of the following?
a)
element
b)
compound
c)
mixture
17.

What colour does litmus paper turn when added to an alkali?

a)

Blue

b)

Red

c)

Green

d)

Colourless

18.

What colour does litmus paper turn when added to an acid?

a)

Blue

b)

Red

c)

Green

d)

Colourless

19.

Which pH levels indicates acidic solution

a)

less than 7

b)

more than 7

c)

7

20.
Sulfur
a)
Metal
b)
Nonmetal
21.

Where are the metals found on the Periodic Table?

a)

Left-side

b)

Right-side

22.

Which elements are found on the right side of The Periodic Table?

a)

Non-metals

b)

Metals

c)

Metalloids

d)

Water

23.

Most metal oxides are

a)

bases

b)

acids

24.

Most non-metal oxides are

a)

acids

b)

bases

25.

A chemical reaction in which a substance combines with oxygen.

a)

Oxidation

b)

Saturation

c)

Neutralisation

d)

Evaporation

26.

The formula of sodium hydroxide is

a)

NH3

b)

Na3N

c)

NaOH

d)

KOH

27.

An alkali is

a)

Acidic

b)

Sour

c)

A soluble base

d)

An insoluble base

28.
OH-
a)
hydronium
b)
hydroxide
29.
CO32-
a)
carbon oxide
b)
carbonate
30.
SO42-
a)
sulfate
b)
sulfite
31.
CaSO4
a)
Silicate
b)
Sulfate
c)
Halide
d)
Sulfide
32.
H20 - name?
a)
hydrooxic acid
b)
hydroxic acid
c)
water
d)
hydrogen oxide
33.

Rubies consist of

a)

aluminium oxide and chromium

b)

iron oxide and chromium

c)

silicon dioxide and chromium

34.

Haematite is .....

a)

iron oxide

b)

silicon dioxide

c)

zinc oxide

d)

aluminium oxide

35.

Sand is

a)

iron oxide

b)

sulfur dioxide

c)

silicon dioxide

d)

aluminium oxide

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