Poylmers, Wood, Metals And Composites

Question 1

Metals - Non-Ferrous (doesn’t contain iron)

Answer 1

Aluminium: Ductile, lightweight, malleable, corrosion resistant
Uses - Drinks cans, aircraft bodies, baking foil
Copper: Ductile, tough, malleable, corrosion resistant, good thermal and electrical conductor
Uses - Electrical wire, central heating pipes, hot water tanks

Question 2

Metals - Ferrous (Contains iron)

Answer 2

Low carbon steel: Ductile, High tensile strength, malleable, poor corrosion resistance
Uses - Nuts, Bolts and car bodies
Cast iron: Good under compression, hard outer skin but brittle core
Uses - Machine parts, disc brakes

Question 3

Metals - Ferrous alloys

Answer 3

Stainless steel: Tough, hard, corrosion resistant
Uses - Sinks, kitchenware (cutlery)
High speed steel: Hard, tough, high level of resistance to frictional heat
Uses - Tool blades, drill bits and milling cutters.

Question 4

Metals - Non -ferrous alloys

Answer 4

Bronze: Tough, corrosion resistant can be cast
Uses - Statues and coins
Brass: Corrosion resistant, good electrical and thermal conductor, low melting point and casts well
Uses - Boats fittings and ornaments

Question 5

Metals - Stock forms

Answer 5

• Sheet
• Bar
• Rod
• Tube

Question 6

Polymers Forming

Answer 6

Made during fractional distillation of crude oil which produces fractions containing a mixture of hydrocarbons (1).