Redox Reactions 0.0 / 5 ? ChemistryRedoxASAQA Created by: izzybook25Created on: 01-05-18 20:10 What is oxidation? Where an atom looses electrons in a reaction 1 of 15 What is reduction? Where an atom gains electrons in a reaction 2 of 15 What is an oxidising agent? An atom which is gains electrons so that another atom can become oxidised 3 of 15 What is a reducing agent? An atom which looses electrons so that another atom can be reduced 4 of 15 What is the oxidation number for an uncombined element? 0 5 of 15 What is the oxidation number for combined oxygen? -2 6 of 15 What is the oxidation number for combined oxygen in peroxide? -1 7 of 15 What is the oxidation number for combined hydrogen? +1 8 of 15 What is the oxidation number for hydrogen in metal hydrides (group 1)? -1 9 of 15 What is the oxidation number for a simple ion? Charge on the ion 10 of 15 What is the oxidation number for combined fluorine? -1 11 of 15 How can we identify which atoms have been oxidised or reduced in a full equation? Look at the changes in charges 12 of 15 Where are electrons written in oxidation half equations? A product of the reaction 13 of 15 Where are electrons written in reduction half equations? A reactant of reaction 14 of 15 How do we balance reduction half equations? Use H+ ions 15 of 15
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