materials and energy supplies, control of equilibrium position and rate of reaction Explain how the An ore is a rock or mineral that contains enough industrial process used to metal to make extracting it economically viable. extract a is chosen If a metal is less reactive than carbon then it can be extracted from its ore by reacting the compound with carbon. If a metal is more reactive than carbon then it can be extracted from its ore by electrolysis. Describe how copper Copper can be extracted from copper sulphide in the may be extracted from following process: copper oxide 2CuS + 3O2 2CuO + 2SO2 2CuO + C 2Cu +CO2 Describe how iron may A blast furnace is used to extract iron from its ore. be extracted from iron The iron ore, coke (carbon) and limestone are added oxide to the top of the blast furnace. Hot air is added to the bottom of the furnace. The reactions involved are as follows: C + O2 CO2 C + CO2 2CO 3CO + 3CO2 + 2Fe Limestone is used to purify the iron. CaCO3 CaO + CO2 CaO + SiO2 CaSiO3 Explain why electrolysis is If a metal is more reactive than carbon then used to extract some electrolysis is used to extract it from its ore. metals from their ores Describe how aluminium Aluminium is extracted from an ore called bauxite, may be extracted from which is aluminium oxide. aluminium oxide Aluminium oxide has a very high melting point so lots of energy would be needed to be used to melt it. Aluminium oxide is therefore dissolved in cryolite, which has a lower melting point and placed in an
materials and energy supplies, control of equilibrium position and rate of reaction Explain how the industrial process used to extract a is chosen An ore is a rock or mineral that contains enough metal to make extracting it economically viable. If a metal is less reactive than carbon then it can be extracted from its ore by reacting the compound with carbon. If a metal is more reactive than carbon then it can be extracted from its ore by electrolysis. Describe how copper may be extracted from copper oxide Copper can be extracted from copper sulphide in the following process: 2CuS + 3O2 2CuO + 2SO2 2CuO + C 2Cu +CO2 Describe how iron may be extracted from iron oxide A blast furnace is used to extract iron from its ore. The iron ore, coke (carbon) and limestone are added to the top of the blast furnace. Hot air is added to the bottom of the furnace. The reactions involved are as follows: C + O2 CO2 C + CO2 2CO 3CO + 3CO2 + 2Fe Limestone is used to purify the iron. CaCO3 CaO + CO2 CaO + SiO2 CaSiO3 Explain why electrolysis is used to extract some metals from their ores If a metal is more reactive than carbon then electrolysis is used to extract it from its ore. Describe how aluminium may be extracted from aluminium oxide Aluminium is extracted from an ore called bauxite, which is aluminium oxide. Aluminium oxide has a very high melting point so lots of energy would be needed to be used to melt it. Aluminium oxide is therefore dissolved in cryolite, which has a lower melting point and placed in an
c6.1_knowledge_organiser.docx