1. States of matter

1.1 Solids, liquids and gases

1.2 Diffusion

2. Atoms, elements and compounds

2.1 Elements, compounds and mixtures

2.2 Atomic structure and the Periodic Table

2.3 Isotopes

2.4 Ions and ionic bonds

2.5 Simple molecules and covalent bonds

2.6 Giant covalent structures

2.7 Metallic bonding

3. Stoichiometry

3.1 Formulae

3.2 Relative masses of atoms and molecules

3.3 The mole and the Avogadro constant

4. Electrochemistry

4.1 Electrolysis

4.2 Hydrogen–oxygen fuel cells

5. Chemical energetics

5.1 Exothermic and endothermic reactions

6. Chemical reactions

6.1 Physical and chemical changes

6.2 Rate of reaction

6.3 Reversible reactions and equilibrium

6.4 Redox

7. Acids, bases and salts

7.1 The characteristic properties of acids and bases

7.2 Oxides

7.3 Preparation of salts

8. The Periodic Table

8.1 Arrangement of elements

8.2 Group I properties

8.3 Group VII properties

8.4 Transition elements

8.5 Noble gases

9. Metals

9.1 Properties of metals

9.2 Uses of metals

9.3 Alloys and their properties

9.4 Reactivity series

9.5 Corrosion of metals

9.6 Extraction of metals

10. Chemistry of the environment

10.1 Water

10.2 Fertilisers

10.3 Air quality and climate

11. Organic chemistry

11.1 Formulae, functional groups and terminology

11.2 Naming organic compounds

11.3 Fuels

11.4 Alkanes

11.5 Alkenes

11.6 Alcohols

11.7 Carboxylic acids

11.8 Polymers

12. Experimental techniques and chemical analysis

12.1 Experimental design

12.2 Acid–base titrations

12.3 Chromatography

12.4 Separation and purification

12.5 Identification of ions and gases

IGCSE Chemistry 9.6 Extraction of metals Question Bank

[Maximum number: 2]

This question is about the first 30 elements in the Periodic Table.
Name the element which:

(a)

is extracted from hematite

[ 1 ]

(b)

is added to molten iron to remove impurities in the steel making process

[ 1 ]

(a)

State one gas which:

[ 1 ]

(i)

reduces iron(III) oxide in a blast furnace.

[ 1 ]

[Maximum number: 11]

Iron ore contains iron(III) oxide, $\mathrm{Fe}_{2} \mathrm{O}_{3}$ . A blast furnace is used to extract iron from $\mathrm{Fe}_{2} \mathrm{O}_{3}$ .
Equations for some of the reactions in the blast furnace are shown.

equation $1 \mathrm{C}+\mathrm{O}_{2} \rightarrow \mathrm{CO}_{2}$

equation $2 \mathrm{CaCO}_{3} \rightarrow \mathrm{CaO}+\mathrm{CO}_{2}$

equation $3 \quad \mathrm{CaO}+\mathrm{SiO}_{2} \rightarrow \mathrm{CaSiO}_{3}$

(a)

Equation 1 shows the combustion of carbon in the blast furnace.

[ 2 ]

(i)

Name the substance which provides the carbon for this reaction.

[ 1 ]

(ii)

State the purpose of the combustion of carbon in the blast furnace.

[ 1 ]

(b)

Iron(III) oxide, $\mathrm{Fe}_{2} \mathrm{O}_{3}$ , in iron ore is converted to iron when it reacts with carbon monoxide, CO , in the blast furnace.

[ 4 ]

(i)

State the name of the iron ore which consists mainly of iron(III) oxide.

[ 1 ]

(ii)

Describe how carbon monoxide is formed in the blast furnace.

[ 1 ]

(iii)

Write the symbol equation to show the reaction that occurs when iron(III) oxide is converted to iron in the blast furnace.

[ 2 ]

(c)

State the type of reaction shown by equation 2 .

[ 1 ]

(d)

(i)

State:
- the chemical name of $\mathrm{SiO}_{2}$
- the common name given to $\mathrm{CaSiO}_{3}$ when it is formed in the blast furnace.

[ 2 ]

(e)

Aluminium cannot be extracted from its ore using a blast furnace.

[ 2 ]

(i)

State why aluminium is not extracted from its ore using a blast furnace.

[ 1 ]

(ii)

Name the process used to extract aluminium from its ore.

[ 1 ]

[Maximum number: 3]

A list of oxides, A to H, is shown.

A calcium oxide
B aluminium oxide
C silicon(IV) oxide
D sulfur dioxide
E carbon dioxide
F iron(III) oxide
G silver oxide
H carbon monoxide

Answer the following questions about the oxides, A to H. Each letter may be used once, more than once or not at all.

State which of the oxides, A to H:

(a)

is a reducing agent in the blast furnace

[ 1 ]

(b)

is the main constituent of bauxite

[ 1 ]

(c)

is the main impurity in iron ore

[ 1 ]

[Maximum number: 2]

A list of substances is shown.

Answer the questions using the substances in the list.
Each substance may be used once, more than once or not at all.
State which substance is:

(a)

the main constituent of hematite

[ 1 ]

(b)

a reducing agent in the extraction of iron

[ 1 ]

[Maximum number: 1]

The symbols of the elements of Period 3 of the Periodic Table are shown.

Answer the following questions about these elements.
Each symbol may be used once, more than once or not at all.
Write the symbol of the element which:

(a)

forms an oxide which is the main impurity in iron ore [1]

[ 1 ]

[Maximum number: 1]

A list of substances is shown.

Answer the questions using the list of substances.
Each substance may be used once, more than once or not at all.
State which of the substances:

(a)

is the main constituent of bauxite

[ 1 ]

(a)

Give the name of the process that:

[ 1 ]

(i)

is used to extract aluminium from aluminium oxide

[ 1 ]

(a)

This question is about elements.
> aluminium
> carbon iron hydrogen oxygen silicon sodium sulfur

Answer the following questions about these elements.
Each element may be used once, more than once or not at all.

[ 1 ]

(i)

Name the element extracted from bauxite.

[ 1 ]

[Maximum number: 1]

The symbols of the elements of Period 3 of the Periodic Table are shown.

Answer the following questions about these elements.
Each element may be used once, more than once or not at all.
Write the symbol of an element which:

(a)

is extracted from an ore called bauxite

[ 1 ]

0 selected

Question 1

Question 1(c)

Question 1(i)

Question 1

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Question 1(a)(v)

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