Metals

Question 1

Metals can be either what or what

Answer 1

Ferrous or non ferrous

Question 2

Ferrous metals contain what

Answer 2

Iron

Question 3

Do non ferrous metals contain iron

Answer 3

No

Question 4

Both ferrous and non ferrous metals are divided into what

Answer 4

Pure metals and alloys

Question 5

A pure metal is a what and give examples

Answer 5

An element, eg - iron, copper, gold - unalloyed (mixed) with another substance

Question 6

Metals are among our most………..resources

Answer 6

Valuable

Question 7

Thousands of years ago people used metals such as copper and iron to make what

Answer 7

Weapons and everyday objects

Question 8

Where did the word ferrous derive from

Answer 8

from the Latin term “Ferrum” which means “containing iron”, thus ferrous metals contain iron and non ferrous metals do not.

Question 9

Ferrous metals may be what

Answer 9

pure iron, like wrought iron, or they may be alloys of iron and other elements

Question 10

Is steel a ferrous metal or a non ferrous metal and why

Answer 10

Steel, being an alloy of iron and carbon, is therefore a ferrous metal.

Question 11

The iron in ferrous metals cause the metal to what

Answer 11

Rust, unless painted or oiled often or galvanise it

Question 12

Ferrous metals are often…….

Answer 12

Magnetic

Question 13

Common ferrous metals include what

Answer 13

The various irons and steels

Question 14

Common non ferrous metals include

Answer 14

aluminium, tin, copper, zinc, and brass, an alloy of copper and zinc. Some precious metals such as silver, gold, and platinum are also non-ferrous.

Question 15

The five most used metals are what

Answer 15

Iron
Aluminium
Copper
Zinc
Manganese

Question 16

Properties of metals

Answer 16

The general physical properties of metals are:
They are hard and strong.
They are solids at room temperature (Except for Mercury).
They have a shiny lustre when polished.
They make good conductors of heat.
They make good conductors of electricity.
They are dense. Malleable and Ductile.

Question 17

The properties of metals make them suitable for different uses in daily life:
Copper

Answer 17

Copper is a good conductor of electricity and is ductile. Therefore Copper is used for electrical cables

Question 18

The properties of metals make them suitable for different uses in daily life:
Gold and silver

Answer 18

Gold and Silver are very malleable, ductile and very unreactive. Gold and silver are used to make intricate jewellery which does not tarnish. Gold can also be used for electrical connections.

Question 19

The properties of metals make them suitable for different uses in daily life:
Iron and steel

Answer 19

Iron and Steel are both hard and strong. Therefore they are used to construct bridges and buildings. A disadvantage of using Iron is that it tends to rust, whereas Steel does not.

Question 20

The properties of metals make them suitable for different uses in daily life:
Aluminium

Answer 20

Aluminium is a good conductor of heat and is malleable. It is used to make saucepans and thin foil, and also aeroplane bodies as it is very light.

Question 21

What do we use aluminium for

Answer 21

We use Aluminium for the chassis of the friction motor car made in Year 9.

Question 22

What do we use aluminium for

Answer 22

We use Aluminium for the chassis of the friction motor car made in Year 9.

Question 23

Properties and uses of aluminium:

First property

Answer 23

Corrosion resistance

Question 24

Properties and uses of aluminium:

Aluminium is more reactive than…..but despite this, it doesn’t……………..when exposed to…and…..

Answer 24

Iron
Easily corrode
Air
Water

Question 25

Properties and uses of aluminium:

Why does it not easily corrode when exposed to air and water

Answer 25

because aluminium has a very thin layer of aluminium oxide on its surface, which - unlike iron oxide or rust - does not flake off. This stops air and water reaching the metal below.

Question 26

Other properties of aluminium:

Answer 26

As well as being corrosion-resistant, aluminium is light (because of its low density) and becomes very strong when alloyed with other metals. The spider diagram summarises this metal’s useful properties.

Question 27

Aluminium a uses may include

Answer 27

aircraft bodies
engine parts
metal cans and foil
cooking equipment
electrical components,
and building materials

Question 28

Why is aluminium used to make drink cans

Answer 28

Because it is light for its size and resists corrosion

Question 29

Alloys:

What is an alloy

Answer 29

An alloy is a mixture of two or more elements in solid solution in which the major component is a metal

Or… a metal mixed with other elements

Question 30

Alloys:

Most pure metals are either………, …….. Or ……………..for practical use

Answer 30

Too soft
Brittle
Chemically reactive

Question 31

Alloys:

Combining different ratios of metals as alloys modify the properties of pure metals to produce what

Answer 31

Desirable characteristics

Question 32

Alloys:

What is the aim of making alloys

Answer 32

to make them less brittle, harder, resistant to corrosion, or have a more desirable colour and lustre

Question 33

Alloys:

Examples of alloys are

Answer 33

Steel (iron and carbon)
Brass (copper and zinc)
Bronze (copper and tin)
Duralumin (aluminium and copper)

Question 34

Alloys:

Alloys specially designed for highly demanding applications, such as jet engines, may contain what

Answer 34

More than ten elements

Question 35

Alloys:

The properties of an alloy are different to the properties of what

Answer 35

Pure metals

Question 36

Alloys:

First property of an alloy is…

Answer 36

Steel contains iron and carbon plus other metals. It is stronger than pure iron. It is used as girders for buildings and car bodies.

Question 37

Alloys:

Second property of an alloy is

Answer 37

Solder is a mixture of tin and lead. It has a lower melting point than pure metals. It is used for connecting electrical circuits.

Question 38

Alloys:

Third property is

Answer 38

Duralumin contains aluminium and copper. It is lighter than copper and stronger than aluminium. It is used in aeroplanes and alloy wheels.