Chemistry 0.0 / 5 ? ChemistryExtracting metals /The reactivity seriesGCSEWJEC Created by: AliciaWilliamsCreated on: 16-05-18 13:58 Where do metals come from? Where are they found? The earths crust. A metal ore is found inside rocks 1 of 22 What are the most common metal ores? Oxides and sulfides 2 of 22 How were sulfided created? From the sulfer in volcanic eruptions 3 of 22 How were oxides created From photosynthesis and a large amount of oxygen was released into the earths atmosphere 4 of 22 What is the issue with metal ores? They are finite and non-renewable 5 of 22 Where are most metals from today? Recycling scrap metals 6 of 22 What do the most reactive metals extracted by? Electrolysis 7 of 22 What are the middle reactants extracted by? Reduction with carbon or carbon monoxide 8 of 22 What are the least reactive extracted by? Native metals or various chemical reactions 9 of 22 Reduction Removing oxygen 10 of 22 Oxidation Gaining oxygen 11 of 22 Electrolysis Using electricity to extract metal 12 of 22 What is a displacement reaction? When a metal takes the place/displaces a less reactive metal in a metal salt solution 13 of 22 What is displacement of oxidation/reduction? The more reactive metal will take the oxygen off the least reactive metal 14 of 22 Raw materials in industrial extraction of iron Iron ore, coke, limestone, hot air 15 of 22 Name the 4 main stage so far extraction Combustion, reduction, decomposition, neutralisation 16 of 22 What is the process of electrolysis? Where ionic substances are broken down into simpler substances using electricity. During which gases and metals may form at the electrodes. 17 of 22 For electrolysis to work what must happen? The ions must be free to move 18 of 22 What is a positive electron called? Anode 19 of 22 What is a negatively charged electron called? Cathode 20 of 22 What do anodes attract? Negatively charged non-metals ions.They then lose an electron which is oxidation 21 of 22 What do cathodes attract? Positively charged non-metals ions. They gain an outer electron this is redution 22 of 22
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