Activity 6.1a

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Activity 6.1a Material Properties
DisplayMetal - Gold

• Mr. Heck

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Section 1 - Categories of Materials

1. Organics
2. Metals and Alloys
3. Polymers
4. Ceramics
5. Composites

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Category - Organic

• Organic means coming from a living source
• Examples include

LEATHER (Car Upholstery)
BONE (Knife Handle)
ELMERS GLUE (Milk Protein Glue)
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Category Metal/Alloy

• Description Metal \Met"al\ (? or ? 277), noun
  F. m'etal, L. metallum metal, mine, Gr. ?
  mine cf. Gr. ? to search after. Cf. Mettle,
  Medal. 1. (Chem.) An elementary substance,
  as sodium, calcium, or copper, whose oxide or
  hydroxide has basic rather than acid properties,
  as contrasted with the nonmetals, or metalloids.
  No sharp line can be drawn between the metals and
  nonmetals, and certain elements partake of both
  acid and basic qualities, as chromium, manganese,
  bismuth, etc.

BRONZE ALLOY (Copper and Tin)
STEEL ALLOY (Iron and Carbon)
COPPER
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Category - Polymers

• Description
• Examples

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Category - Ceramic

• Description
• Examples

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Category - Composite

• Description
• Examples

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MATRICS
Insulator Flammable Flexible Inert Transparent
Wood
Copper
Glass
Brick
Paper
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Part 2 Properties of a single material - Gold

• What makes gold unique?
• It rare, and valuable
• Gold resists corrosion
• It is a good conductor of electricity

Gold computer parts
GoldJewelry
Gold Dental Work
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Physical Properties of Gold
Natural Gold Crystal
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Material Life Cycle - Gold
Useless Gold items melted down For scrap
Gold Ore Mined
Product made from Gold are services (Jeweler,
Dentist)
Ore is smelted into Gold ingots
Consumer products are made from gold blanks
Gold ingots are formed into blanks (wire,
chain, sheets)
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Section 3 Answer the 2 Questions