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METALS (1. Metals (transport, telecommunications, agriculture,…
METALS
UNIT 3_2
1. Metals
transport
telecommunications
agriculture
construction
manufacturing machinery
1.1.The properties of metals
Physical properties
Strong
Ductile and malleable
Plastic and elastic
Electrical
Magnetic
Chemical properties
Oxidation
React with oxygen
Ecological
Recycable
Reusable
Toxic
Lead
Mercury
1.2 Extraction of metals
Surface mining
Underground mining
Depending on their origin
Ferrous materials
Non-ferrous materials
1,3. Ferrous materials
Contain iron
Iron
Steel
cast iron
1.4. Non-ferrous materials
Do not iron
Light
Aluminum
Magnesium
Titanium
Heavy
lead
Tin
Zinc
Copper
Bronze
Brass