Metals

Question 1

What is an Ore

Answer 1

An Ore is a naturally occuring rock that contains a metal

Question 2

What are the two categories of metals

Answer 2

• Ferrous metals
• Non Ferrous metals

Question 3

What does it mean if a metal is ferrous?

Answer 3

A ferrous metal contains iron and is magnetic.

Question 4

What does it mean jf a metal is non ferrous?

Answer 4

It means the metal doesnt contain iron and the majority aren’t magnetic.

Question 5

List the properties of ferrous metals

Answer 5

• The carbon content make it prone to corrosion when exposed to moisture and oxygen - rust
• Hard
• Malleability related to carbon content: more carbon the harder and less maleable, less carbon the more maleable the material becomes

Question 6

List the properties of a non ferrous metal

Answer 6

• The fact that it does not contain iron means it is more desirable due to malleable properties
• Resistant to corrosion
• Good thermal and electrical conductivity
• Low density
• Non-magnetic

Question 7

List some ferrous metals

Answer 7

• Cast Iron
• Low carbon steel
• High carbon steel

Question 8

List some non ferrous metals

Answer 8

• Copper
• Zinc
• Aluminium

Question 9

What is an Alloy?

Answer 9

An alloy is a metal formed by mixing 2 or more different types of metals to produce a new metal that has improved characteristics and properties.

Question 10

Why are alloys used?

Answer 10

Alloys adjust their mechanical and physical properties in order to produce a more suitable material for a particular purpose. They can be both ferrous and non ferrous depending on the metal included.

Question 11

List 3 ferrous metals

Answer 11

• Cast iron
• Low carbon steel
• High carbon steel

Question 12

List 3 non ferrous metals:

Answer 12

• alluminium
• cooper
• zinc

Question 13

What is aluminiums compostition

Answer 13

Pure metal

Question 14

List the properties of aluminium

Answer 14

• Greyish-white colour
• has a high thermal conductivity
  -has excellent corrosion resistance
• can be easily cast, machined and formed.
• can be welded but with dificulty

Question 15

What is the composition of Cast Iron?

Answer 15

Ferrous metal and alloy.

Question 16

List the properties of cast iron:

Answer 16

Hard, resistant to abrasion and indentation and ductile.

Question 17

Uses of cast iron.

Answer 17

Pipes, machines, automotive industry, pans

Question 18

Compositon of copper

Answer 18

Pure-metal, non ferrous

Question 19

Properties of copper:

Answer 19

Malleable, very good conductor of electricity and heat.

Question 20

Uses for copper.

Answer 20

Wiring and motors, electrical equipment, building costructions

Question 21

Composition of zink

Answer 21

Non ferrous alloy

Question 22

Properties of Zink

Answer 22

Brittle and crystalline at room temp, melleable when heated between 110-150 degrees, high corrosion resistance

Question 23

Uses for Zink

Answer 23

Used to galvanise steel and iron

Question 24

Composition of low carbon steel

Answer 24

Ferrou alloy

Question 25

Properties of low carbon steel

Answer 25

Tough and ductile but relatively soft and weak, rusts if not protected.

Question 26

Uses for low carbon steel

Answer 26

Car bodies, steel building frames, pipelines

Question 27

Composition of high carbon steel

Answer 27

Ferrous metal

Question 28

Properties of high carbon steel

Answer 28

Hard, but brittle, hard wearing, resists abrasion and retains its shapen.

Question 29

Uses of high carbon steel

Answer 29

Tools, blades, scissors

Question 30

Composition of tin

Answer 30

Non ferrous pure metal

Question 31

Properties of tin

Answer 31

Malleable and ductile, high corrosion resistance, good electrical conductor

Question 32

Uses for tin

Answer 32

Solder, plating surfaces such as cans