2006-08-15 19:10:42 · 4 answers · asked by kat 2 in Science & Mathematics ➔ Chemistry
the ore is stable and you have to have insentive for the metal to leave its stable complex. that takes energy
2006-08-16 01:08:42 · answer #1 · answered by shiara_blade 6 · 1⤊ 0⤋
Ore is nothing but a compound of the metal. The energy is required to break the compound into its constituents. The atoms are held together by forces (covalent or electrostatic force ..) in a compound, to overcome these forces and break the bond energy is supplied!
2006-08-15 19:28:29 · answer #2 · answered by genious x 1 · 0⤊ 0⤋
an ore is usually a compound of the metal mixed with a lot of unneeded stuff like clay, other metals, etc. first you need to isolate the compound of the metal from the rest of the crap. then you need to isolate the metal from the compound. this usually involves a chemical reaction or electrolysis. both use energy to separate the metal atom from the non-metal atom. after isolating the metal, you need to further refine it to a desired quality. here again you have to use electricity or heat, both of which are energy.
in short, metal extraction, like any other process in life, requires energy!
2006-08-15 19:19:01 · answer #3 · answered by Anirudh 2 · 0⤊ 0⤋
The consumption of the energy sector covers the consumption of own-produced energy and of energy purchased by energy producers and transformers in operating their installations.
Final energy consumption - ore extraction (except fuels) industry covers quantities consumed in the ore-extraction industries (NACE 13 Mining of metal ores + 14 Other mining and quarrying), except in fuels production and fabrication industry, which are covered in consumption of energy sector (Code 101300).
2006-08-15 19:19:02 · answer #4 · answered by juicy 3 · 0⤊ 0⤋