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Redox Reactions quiz

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  • What does 'LEO' stand for in the mnemonic 'LEO the lion says GER'?
    'LEO' stands for 'Lose Electrons Oxidation.'
  • What does 'GER' stand for in the mnemonic 'LEO the lion says GER'?
    'GER' stands for 'Gain Electrons Reduction.'
  • What happens to the oxidation number of a substance that loses electrons?
    The oxidation number increases when a substance loses electrons.
  • What happens to the oxidation number of a substance that gains electrons?
    The oxidation number decreases when a substance gains electrons.
  • How does losing electrons affect the charge of a substance?
    Losing electrons makes the substance more positive in charge.
  • How does gaining electrons affect the charge of a substance?
    Gaining electrons makes the substance more negative in charge.
  • If a substance is oxidized, what role does it play in a redox reaction?
    If a substance is oxidized, it acts as the reducing agent.
  • If a substance is reduced, what role does it play in a redox reaction?
    If a substance is reduced, it acts as the oxidizing agent.
  • What is the relationship between oxidation and the reducing agent?
    The reducing agent is the substance that is oxidized in the reaction.
  • What is the relationship between reduction and the oxidizing agent?
    The oxidizing agent is the substance that is reduced in the reaction.
  • What is transferred between reactants in a redox reaction?
    Electrons are transferred between reactants in a redox reaction.
  • How can you predict if a substance is being oxidized in a reaction?
    If its oxidation number increases, the substance is being oxidized.
  • How can you predict if a substance is being reduced in a reaction?
    If its oxidation number decreases, the substance is being reduced.
  • Why are the terms 'oxidizing agent' and 'reducing agent' considered opposites?
    Because the oxidizing agent is reduced and the reducing agent is oxidized.
  • Why is understanding oxidation numbers important in redox reactions?
    It helps identify which substances are oxidized or reduced during the reaction.