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Choose any metal,explain in what all forms it is found in nature and,where all it is found and how abundant are its reserves.Suggest ways of recycling it and Conserve it.(8th class Project Work)
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Aluminium is a chemical element with the atomic number 13 — it has 13 protons in the nucleus, surrounded by 13 electrons. It’s a silvery-white, very soft when pure but very strong in alloy form, nonmagnetic metal. Aluminium is the most abundant metal and the third overall in our planet’s crust, making up 8% of it’s mass. But being very chemically reactive, it’s almost impossible to find aluminium in native form — pure aluminium nuggets can only be found in extreme environments, but atoms of the element appear in almost 270 minerals.
It’s also very ductile and easy to machine, cast, draw or extrude, and has thermal and electrical conductivity almost as good as copper’s. Throw in good corrosion resistance, and it’s easy to see why aluminium is the most produced and widely used nonferrous metal: from airplanes, satellites and space shuttles to beer cans and packaging, we can’t get enough of it.
When aluminium is exposed to air, a very thin layer of aluminium oxide forms on the surface, insulating the body of metal from oxygen, and this metal is only corroded by water at temperatures in excess of 280 degrees C. There are some chemical substances that do attack it — most notably salt, this being the main reason it isn’t used in plumbing — but given it’s general resistance to corrosion, aluminium isn’t consumed during it’s lifetime as a product, it’s just being used
Aluminium recycling is the process by which scrap aluminium can be reused in products after its initial production. The process involves simply re-melting the metal, which is far less expensive and energy-intensive than creating new aluminium through the electrolysis of aluminium oxide (Al2O3), which must first be mined from bauxite ore and then refined using the Bayer process. Recycling scrap aluminium requires only 5% of the energy used to make new aluminium from the raw ore.[1] For this reason, approximately 36% of all aluminium produced in the United States comes from old recycled scrap.[2] Used beverage containers are the largest component of processed aluminum scrap, and most of it is manufactured back into aluminium cans.[3]
Aluminium is a chemical element with the atomic number 13 — it has 13 protons in the nucleus, surrounded by 13 electrons. It’s a silvery-white, very soft when pure but very strong in alloy form, nonmagnetic metal. Aluminium is the most abundant metal and the third overall in our planet’s crust, making up 8% of it’s mass. But being very chemically reactive, it’s almost impossible to find aluminium in native form — pure aluminium nuggets can only be found in extreme environments, but atoms of the element appear in almost 270 minerals.
It’s also very ductile and easy to machine, cast, draw or extrude, and has thermal and electrical conductivity almost as good as copper’s. Throw in good corrosion resistance, and it’s easy to see why aluminium is the most produced and widely used nonferrous metal: from airplanes, satellites and space shuttles to beer cans and packaging, we can’t get enough of it.
When aluminium is exposed to air, a very thin layer of aluminium oxide forms on the surface, insulating the body of metal from oxygen, and this metal is only corroded by water at temperatures in excess of 280 degrees C. There are some chemical substances that do attack it — most notably salt, this being the main reason it isn’t used in plumbing — but given it’s general resistance to corrosion, aluminium isn’t consumed during it’s lifetime as a product, it’s just being used
Aluminium recycling is the process by which scrap aluminium can be reused in products after its initial production. The process involves simply re-melting the metal, which is far less expensive and energy-intensive than creating new aluminium through the electrolysis of aluminium oxide (Al2O3), which must first be mined from bauxite ore and then refined using the Bayer process. Recycling scrap aluminium requires only 5% of the energy used to make new aluminium from the raw ore.[1] For this reason, approximately 36% of all aluminium produced in the United States comes from old recycled scrap.[2] Used beverage containers are the largest component of processed aluminum scrap, and most of it is manufactured back into aluminium cans.[3]
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