Metals

Question 1

What are the advantages of metals

Answer 1

Come in a range of colours
Metals can be polished to a high shine
Are very good at conducting electricity
Metals such as aluminium have a good strength to weight ratio

Question 2

What are the disadvantages of using metals

Answer 2

Ferrous metals are prone to rusting so a finish must be applied to it
Adding time which adds to cost of manufacture
Once all the metal has been mined there will be none left
Can be recycled

Question 3

What is a ferrous metal

Answer 3

A ferrous metal is a metal he contains iron which can therefore make it prone to rust as iron reacts with oxygen which develops iron oxide

Require a finish

Are magnetic

Question 4

What are the properties and identifying features of iron

Answer 4

Properties - strong, tough cannot be bent or forged, a hard outer skin

Identifying features - usually painted to avoid rust very dark gray to black with a Matt texture

Question 5

What are the properties and identifying features of mild-steel

Answer 5

Properties- Ductile, and malleable yet tough easy to weld

Identifying features- silvery grey with poor corrosion resistance

Question 6

What are the properties and identifying features of high-carbon steel

Answer 6

Properties- Brittle, difficult to cut resistant to wear

Identifying features- silvery grey with poor corrosion resistance

Question 7

What are the properties and identifying features of stainless steel

Answer 7

Properties- Corrosion resistant, tough, difficult to cut and shape

Identifying features- silvery grey, can appear dull or or shiny

Question 8

What is a non-ferrous metal

Answer 8

Doesn’t contain iron which means it is non magnetic
Don’t rust
Can tarnish

Question 9

What are the properties and identifying feature of aluminium (pure metal)

Answer 9

Properties- good strength to weight ratio, malleable, conducts heat and electricity well ductile

Identifying features- shiny silvery grey colour that polishes well

Question 10

What are the properties and identifying features of brass

Answer 10

Properties- rigid, polishes well, conducts heal and electricity well, solders well

Identifying features- golden tones that polish well

Question 11

What are the properties and identifying features of copper

Answer 11

Properties- tough, ductile, malleable, conducts heat and electricity well, solders well