1.1.4 REDOX 0.0 / 5 ? ChemistryRedoxASOCR Created by: upsidedown1004Created on: 16-05-16 12:29 What is an oxidation number represent? measure of the number of electrons an atom uses in bonding 1 of 13 What is the oxidation number of an uncombined element? 0 2 of 13 What is the oxidation number of combined hydrogen? +1 3 of 13 What is the oxidation number of combine oxygen? -2 4 of 13 What is the oxidation number of simple ions? (Na, Mg) equal to ionic charge 5 of 13 What is oxidation? process of electron loss, oxidation number increases 6 of 13 What is reduction? process of electron gain, oxidation number decreases 7 of 13 What do Roman Numerals represent? after an element in a compound or as an ion will indicate the atom's oxidation number 8 of 13 What is a redox reaction? reaction where both oxidation and reduction take place 9 of 13 why do metals generally increase in oxidation number? as they loose electrons (oxidise) 10 of 13 What is a disproportionation reaction? when an element is both oxidised and reduced 11 of 13 what is an oxidising agent? will oxidise a species by removing electrons from it (gets reduced) 12 of 13 What is a reducing agent? will reduce a species by donating its own electrons (gets oxidised) 13 of 13
WJEC CH2 Chemistry Topic 6.2: Trends in properties of the elements of the s-block and Group 7 3.0 / 5 based on 1 rating
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