Flashcards
Extraction of copper: ores, electrolysis, bioleaching
Flashcards do conjunto (15)
- 1state some uses of copper?water pipes, coins, electrical wiring and bottom of pans
- 2What is an ore?An ore is a rock which contains enough metal to economically extract it.
- 3The metals in an ore are usually found as what?metal compounds!
- 4State some properties of Copper..Malleable, soft, dense,doesn't rust and good conductor of electricity
- 5The original method for extracting copper from its ore is by reduction with carbon why does this work?It works because carbon is more reactive than copper.
- 6what is electrolysis?electrolysis is the process by which ionic substances are decomposed (broken down) into simpler substances when an electric current is passed through them.
- 7advantages of recycling copper?Environmentally friendly, don't have to extract it again, less global warming.
- 8what is bioleaching?Bioleaching uses bacteria to leach metals from the metal ore into a solution.
- 9state some properties of aluminium.Non magnetic, good electrical conductor, resistant to corrosion, malleable
- 10Iron + copper sulphate---->?iron + copper sulphate ---> iron sulphate + copper
- 11some plants absorb copper compounds through their roots. They concentrate these compounds as a result of this. The plants can be burned to produce an ash that contains the copper compounds. what is this method of extraction called?Phytomining!
- 12Why are pure metals soft?Pure metals are soft because the atoms can slide over each other.
- 13what is aluminium used for?Drinks and food cans, bicycle frames, pylons and high voltage conduction.
- 14The main ore of aluminium is called what?Bauxite
- 15Titanium comes from what ore?Rutile
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- FlashCards sobre Sem título, criado por Gemma Baker em 28-09-2014.
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