CHEM 1A Lecture Notes - Lecture 11: Mnemonic, Oxidation State, Fluorine
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CHEM 1A Full Course Notes
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Oxidation-reduction reactions: changing the amount of ions in the solution, can increase the number of ions in a solution, will have single replacement react ion, but not always the case. When you take a metal and add an acid to it, hydrogen gas will evolve and ions: oxidation. When a substance loses electrons: reduction. Leo the lion goes ger = mnemonic device: # electrons gained = # electrons lost very important to note. When he says something has a charge = physically removed or attached an electron. Oxidation number/state: oxidations states are hypothetical, pretend everything is an ionic bond. Trying to get an idea of where these electrons will be when you form a bond: memorize oxidation number/state rules, rule 1. The sum of all the oxidations states has to equal the charge of your molecule or atom. If you have a neutral atom or molecule and were to add up all the oxidation states, then should equal 0.
