chemisry 0.0 / 5 ? ChemistryAcids, bases and saltsGCSEAQA Created by: akarim1Created on: 04-02-17 16:56 What is an Ore? a rock which contains enough metal to make it economically worthwhile to extract the metal 1 of 9 What does Oxidised mean? Describes a substance that has had oxygen added to it or has lost electrons 2 of 9 Give an equation for oxidation: iron+oxygen=iron oxide 3 of 9 What do you have to do to extract metals from their oxides the metal oxide must be reduced (have oxygen removed) 4 of 9 What is reduction? a reaction in which oxygen is removed or electrons are gained 5 of 9 What is the Reactivity Series A list of metals in order of their reactivity with the most reactive metals at the top and the least reactive ones at the bottom 6 of 9 Order of reactivity: 1 Potassium 2 Sodium 3 Lithium 4 Calcium 7 of 9 How can you tell if Hydrogen gas is given off if metals rect with water and a dilute acid? The gas 'pops' with a lighted spill 8 of 9 What is a Displacement reaction? when a more reactive element displaces a less receptive element from a aqueous solution 9 of 9
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