Metals Flashcards

1
Q

Where are metals found on earth?

A

Underground

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2
Q

What are metals impure form?

A

Ore

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3
Q

Name the 3 categories of metals?

A

Ferrous, Non-ferrous metals and alloys

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4
Q

What is a ferrous metal?

A

Metals containing Iron

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5
Q

What is a non-ferrous metal?

A

Metals not containing Iron

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6
Q

Give the properties of Ferrous metals?

A
  • Contains Iron
  • Magnetic
  • Do corrode in water
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7
Q

Name 5 Ferrous metals?

A

Steel
Iron
Cast Iron
Low carbon steel
High carbon steel

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8
Q

Give the properties of Non Ferrous metals?

A
  • Don’t contain iron
  • Not magnetic
  • Won’t corrode in water
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9
Q

Name 5 Non Ferrous metals?

A

Zinc
Copper
Aluminium
Tin
Titanium

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10
Q

What is an alloy?

A

A mixture of 2 different elements (usually metals)

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11
Q

Name 4 alloys?

A

Stainless Steel
Brass
Magnesium
Pewter

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12
Q

Name the common characteristics of metals?

A

High melting/boiling point
Thermal and electrical conductivity
Ductility
Malleability
Toughness

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13
Q

Name the properties of Carbon steel?

A

Ductile & Hard

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14
Q

Name the properties of Mild Steel?

A

Tough, Malleable, Magnetic

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15
Q

Name the properties of copper?

A

Good conductor of heat and electricity, ductile, malleable, corrosion resistant

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16
Q

Name the properties of Stainless Steel?

A

Tough, Hard, Corrosion resistant

17
Q

Name the properties of Zinc?

A

Excellent resistant to corrosion : used to cover nails

18
Q

Name the properties of brass?

A

Copper 67% Zinc 33% - Corrosion resistant, Good fluidity/casts well

19
Q

Name the properties of bronze?

A

Copper 88% Tin 12% - Malleable, ductile, corrosion resistant, good conductor

20
Q

Name the properties of Aluminium?

A

Lightweight, Soft, Ductile, Malleable

21
Q

What is plastic coating?

A

Process of coating metal with a thermoplastic. The metal is heated, then dipped in powdered plastic.

22
Q

What is powder coating?

A

This process uses an electrostatic charge to coat the metal product with polyester powder. Once coated, the product is baked in an oven to produce a smooth, high-gloss finish.

23
Q

What is Anodizing?

A

A process for coating a metal, especially aluminium, with a protective oxide layer by an electrolytic process.

24
Q

What is Galvanising?

A

A process in which steel is coated with zinc to prevent corrosion.