Metals

Question 1

Where do metals come from

Answer 1

Ores in the earths crust

Question 2

What’s the difference between ferrous and non ferrous metals?

Answer 2

Ferrous contain iron and therefore are magnetic and will most likely rust. Where as non ferrous do not contain iron and will not rust.

Question 3

What is an alloy

Answer 3

Made up by combining a metal and another element.

Question 4

Are metals recyclable

Answer 4

Yes.

Question 5

3 examples of ferrous metals

Answer 5

Iron, mild steel, high carbon steel, high speed steel.

Question 6

3 examples of non ferrous metals.

Answer 6

Copper, tin, aluminium, silver, platinum, gold, brass.

Question 7

3 examples of alloys

Answer 7

Bronze, stainless steel, brass.

Question 8

Iron- properties and uses

Answer 8

Ductile, malleable, strong, durable, magnetic and affordable. It rusts which weakens the structure and is very dense/ heavy so hard to transport. Can be too soft by itself.
Machinery and tools. Structural elements for bridges and buildings.

Question 9

Mild steel- properties and uses

Answer 9

Good impact and tensile strength, ductile, magnetic, malleable, affordable, conductive. Less robust than other steels, less resilient, can corrode more then other steels.
Building construction, pipelines, gating and fencing plus nuts and bolts.

Question 10

High speed steel- properties and uses

Answer 10

Hard and abrasion resistant, strong and resistant to high temperatures. Has high cutting speeds and a relatively low cost. Low bending strength and poor impact toughness. Very brittle.
Manufacturing drill bits and machine components.

Question 11

aluminium- properties and uses

Answer 11

Low density, non toxic, good conductivity and corrosion resistant. Ductile and malleable. High cost compared to other steels, very weak in pure form.
Kitchen utensils, foil, cans, lightweight aeroplane parts.

Question 12

Copper- properties and used

Answer 12

Malleable, ductile, good conductor, 100% recyclable and lightweight. Not as strong as other metals.
Electrical wiring or plumbing pipes.

Question 13

Brass- properties and uses

Answer 13

Corrosion resistant, malleable, good conductor and ductile. Can discolour over time, expensive and prone to cracking.
Musical instruments, bullet cases, hinges and locks.

Question 14

Bronze- properties and uses

Answer 14

High melting point, brittle, hard, resists corrosion, good conductor of heat and electricity. Expensive, soft, weak.
Instruments, sculptures, tools.

Question 15

Stainless Steel- properties and uses

Answer 15

Fire resistant, durable, attractive, sustainable, hygienic, doesn’t rust, strong. Hard to weld and form due to it’s strength, expensive.
Medical equipment, toasters, pans, sinks.