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 9.3 Alloys and their properties Question Bank

[Maximum number: 1]

The diagram shows a blast furnace.

(a)

The graph shows how the malleability of iron changes as the percentage of carbon in the iron changes.

[ 1 ]

(i)

Describe how the malleability of iron changes as the percentage of carbon changes.

[ 1 ]

[Maximum number: 2]

Some elements are shown in the order they appear in the reactivity series. The most reactive element is at the top.
> sodium calcium magnesium aluminium zinc iron hydrogen copper

(a)

Answer the questions using the list of elements. Each element may be used once, more than once or not at all.

Identify:

[ 2 ]

(i)

the main component of steel

[ 1 ]

(ii)

a metal found in brass

[ 1 ]

[Maximum number: 1]

Substances P and Q both conduct electricity.
P is a mixture of two different types of atom.

Q is made of only one type of atom.
Which row describes P and Q ?

alloy

element

alloy

compound

alloy

compound

element

[Maximum number: 1]

Which description of brass is correct?

alloy

compound

element

non-metal

[Maximum number: 1]

Which description of brass is correct?

alloy

compound

element

non-metal

[Maximum number: 1]

Which description of brass is correct?

alloy

compound

element

non-metal

[Maximum number: 1]

A list of five metals is shown.

A list of five metals is shown.

\title{
copper \\ iron \\ magnesium \\ potassium \\ silver
}

(a)

All metals form positive ions.

[ 1 ]

(i)

State which of the five metals in the list is a major component of stainless steel.

[ 1 ]

[Maximum number: 3]

Zinc is extracted from an ore containing zinc sulfide.

(a)

Brass is an alloy of zinc.

Explain, in terms of particles, why brass is harder than pure zinc.

[ 3 ]

[Maximum number: 1]

Zinc and copper are elements next to each other in the Periodic Table.

(a)

Name the alloy formed when zinc is mixed with copper.

[ 1 ]

[Maximum number: 2]

Iron is extracted from its ore using coke in a blast furnace.

(a)

(i)

Iron containing a small amount of carbon is known as steel.

Explain why steel is less malleable than iron.

[ 2 ]

0 selected

Question 1

Question 1(c)

Question 1(c)(i)

Question 1

Question 1(a)

Question 1(a)(iii)

Question 1(a)(v)

Question 3

Question 5

Question 5

Question 5

Question 2

Question 2(a)

Question 2(a)(iv)

Question 2

Question 2(c)

Question 3

Question 3(b)

Question 3

Question 3(c)

Question 3(c)(iii)