Page 44 - Curriculum Visions Dynamic Book
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Key facts about...
Copper
Forms alloys with other metals easily
Essential for plant growth
Scarce metal, making only 70 parts per million of the Earth’s crust
Has no taste
Has no smell
Silver
A soft, orangy–red metal, chemical symbol Cu
Turns green when exposed to the air
Good conductor of electricity
Good conductor of heat
Melts at 1083°C, a lower temperature than many other metals
Forms alloys with copper to give it additional strength
Scarce metal, making only one hundred- millionth of the Earth’s crust
Has no taste
Has no smell
Best natural reflector of light
Turns brown slowly (tarnishes) when exposed to polluted air
The best conductor of electricity of any metal
The best conductor of heat of any metal
Soft and easily worked
Melts at 960°C
Atomic number 29, atomic weight about 64
A soft, white metal, chemical symbol Ag
Atomic number 47, atomic weight about 108
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