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Group 1A metals always have an oxidation number of +1. True or False?

• 10 Points for Correct Answers... 1.)Group 1A metals always have an oxidation number of +1. A.)True B.)False 2.) Oxidation-reduction reactions are reactions in which: A.)protons are transferred from one reactant to another B.)electrons are transferred within the same atom C.)electrons are transferred from one reactant to another D.)oxygen molecules must participate 3.)In a redox reaction, any increase in the oxidation number of a reactant must be accompanied by a decrease in the oxidation state of a reactant. A.)True B.)False 4.)Preventing iron corrosion is important because many structures, including bridges and iron railings, are likely to rust over time and become weaker. Which of the following conditions would make corrosion more likely? A.)increasing the moisture level near the structure B.)reducing the concentration of electrolytes in solutions in contact with the structure C.)neutralizing any acidic solutions near the iron D.)painting the iron surface 5.)When in a compound, the oxidation number of a nonmetal: A.)is always fixed and can never be changed B.)can only be deduced once all the other oxidation numbers in the equation are totaled C.)may depend on what other elements are in the compound D.)must remain the same on both sides of the equation 6.)When balancing the oxidation and reduction half-reactions for acidic solutions, you should: A.)use H+ and OH− equally in order to balance the equation B.)use H+ only in order to balance the equation C.)use H+ and H2O, as needed to balance the equation D.)use OH− and H2O, as needed to balance the equation 7.)When balancing the oxidation and reduction half-reactions for basic solutions, you should: A.)use H+ and OH− equally in order to balance the equation B.)use H+ only in order to balance the equation C.)use H+ and H2O, as needed to balance the equation D.)use OH− and H2O, as needed to balance the equation 8.)Electrochemical reactions are oxidation-reduction reactions that: A.)are capable of generating electric current B.)have unequal oxidation numbers on both sides of the equation C.)only generate the oxidation reaction D.)only generate the reduction reaction 9.)The voltaic cell produces electric current from a spontaneous chemical reaction, but electrolytic reactions are not spontaneous. A.)True B.)False

• Answer:

  1.)Group 1A metals always have an oxidation number of +1. A.)True 2.) Oxidation-reduction reactions are reactions in which C.)electrons are transferred from one reactant to another