chemistry 0.0 / 5 ? ChemistryMetals, metal ores and alloysGCSEAQA Created by: Lewys ThomsonCreated on: 06-06-15 08:46 What are in the ores which make it economical to mine? Metal. 1 of 13 What is done to the ores before the metal is extracted and purified? They are concentrated. 2 of 13 What are most metals when they are found in the earth? They are in compounds. 3 of 13 How are metals which are less reactive than carbon extracted from their oxides? They are put in a blast furnace. for example Iron Oxide would go into the furnace to make Iron 4 of 13 How is copper exrtracted from the Ore? heating the Ores in a furnace (smelting). 5 of 13 How is the copper purified? Electrolysis. 6 of 13 What is happening to the supply of copper rich ores? It is becoming scarce, or limited. 7 of 13 What is Phytomining? When plants are used to absorb metal compounds. Then the plants are burned to produce ash which is rich in the metal compounds. 8 of 13 What is Bioleaching? The use of Bacteria to produce leachate solutions that contain the metal compounds. 9 of 13 What happens to the positive ions during Electrolysis? They move towards the negative electrode. 10 of 13 What are scientists trying to do to reduce environmental impacts of traditional mining? They are trying to create new ways of extracting copper from low grade ore. 11 of 13 Why are Aluminium and Titanium different to other metals in extracting them? They cannot be extracted from their oxides by reduction with carbon. 12 of 13 Can you name one thing that we can do to reduce environmental impacts of extracting metals? We should recycle them. 13 of 13
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