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Oxydation

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Question
Answer
What is an oxidation number?   the number of electrons that an atom uses to bond with atoms from another element  
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What is the oxidation number of an uncombined element?   0  
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What is the oxidation number of a "combined Oxygen"(compound with an oxygen)   -2  
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What is the oxidation number of a "combined Hydrogen"(compound with an Hydrogen)   +1  
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What is the oxidation number of a simple ion   it would be the charge on the ion  
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What is the oxidation number of a "combined Fluorine"(compound with an Fluorine)(generally applies to all halogens)   -1  
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what is the oxidation number of iron in iron(III)chloride   +3  
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what is the oxidation number of sulfur in SO3 2- (nitrate III)   +3  
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what is the oxidation number of K in K   0  
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during a Redox reaction what is oxidation   the loss of electrons  
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during a Redox reaction what is Reduction   The gain of electrons  
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During the reaction Mg + Cl2 ---> MgCl2 what happens to the Mg   oxidation (Mg ---> Mg2+ + 2e-)  
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During the reaction Mg + Cl2 ---> MgCl2 what happens to the Cl2   Reduction (Cl2 + 2e- ---> 2Cl-)  
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A reducing agent is?   A reagent that reduces (adds a electron to) another species  
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A oxidising agent is?   a reagent that oxidises (takes electrons from) another species  
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