1) Uses of Na (Sodium):
a) Sodium is used in the manufacture of soap, detergents, and paper.
b) Sodium is used in the production of glass and ceramics.
c) Sodium is used as a preservative in food.
Uses of Al (Aluminum):
a) Aluminum is used in the construction industry for making doors, windows, and structural components.
b) Aluminum is used in the transportation industry for making vehicle bodies, airplanes, and bicycles.
c) Aluminum is used in the packaging industry for making cans and foils.
Uses of Fe (Iron):
a) Iron is used in the construction industry for making bridges, railways, and buildings.
b) Iron is used in the manufacturing industry for making machinery, tools, and equipment.
c) Iron is used in the automotive industry for making car frames and engine parts.
Uses of Zn (Zinc):
a) Zinc is used in the production of galvanized steel, which is rust-resistant.
b) Zinc is used in batteries, such as alkaline batteries.
c) Zinc is used in the production of sunscreen and cosmetics.
Uses of Cu (Copper):
a) Copper is used in electrical wiring and electronics.
b) Copper is used in plumbing and heating systems.
c) Copper is used in the production of coins and artwork.
2) Effects of mining ores from underground:
a) Destruction of habitats and loss of biodiversity.
b) Contamination of groundwater and surface water.
3) Pollution caused by the extraction of ores:
a) Sulphur(iv)oxide, SO2:
2SO2 + O2 -> 2SO3
SO3 + H2O -> H2SO4
b) Carbon(iv)oxide, CO2:
C + O2 -> CO2
c) Chlorine, Cl2:
Cl2 + H2O -> HCl + HOCl
These reactions can lead to the formation of acid rain, greenhouse gases, and toxic fumes.
1)Give three uses each of Na,Al,Fe,Zn,Cu
2)State two effects of mining the ores from underground
3)The following gases may be present during extraction of ores.State using equations how each one of them may cause pollution
a)Sulphur(iv)oxide,SO2
b)Carbon(iv)oxide,CO2
c)Chlorine,Cl2
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