Oxidation and Reduction
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18 QuestionsShow answers
  • Question 1
    120 seconds
    Q. What is the species that lose electrons in a redox reaction?
    answer choices
    oxidizing agent
    reducing agent
    is reduced
    decreases in oxidation number
  • Question 2
    120 seconds
    Q. What is the species that gain electrons in a redox reaction?
    answer choices
    oxidizing agent
    reducing agent
    is oxidized
    increases in oxidation number
  • Question 3
    300 seconds
    Q.

    What is the oxidizing agent of this reaction?

    3Mg + N2−−−−> Mg3N2

    answer choices

    Mg

    N2

    Mg3N2

    MgN

  • Question 4
    300 seconds
    Q. What is the reducing agent of this reaction?
    2Al(s) + 6H+(aq) −−−> 2Al3+ (aq) + 3H2(g)
    answer choices
    H+
    Al3+
    Al
    H2
  • Question 5
    180 seconds
    Q.

    Which species undergoes a loss of electrons?

    Fe(s) + Cl2(g)−−−>Fe2+(aq) + Cl- (aq)

    answer choices

    Fe

    Fe2+

    Cl2

    Cl-

  • Question 6
    180 seconds
    Q.

    Which species undergoes a gain of electrons?

    Zn(s) + Mg2+(aq) −−−> Zn2+(aq) + Mg (s)

    answer choices

    Zn

    Mg2+

    Zn2+

    Mg

  • Question 7
    300 seconds
    Q. What is the oxidation number of Fe in FeO?
    answer choices
    +1
    -1
    +2
    -2
  • Question 8
    60 seconds
    Q. What is the oxidation number of H in CH4?
    answer choices
    -1
    +1
    -4
    +4
  • Question 9
    300 seconds
    Q. In the reaction
    2Ca(s) + O2(g) --> 2CaO(s), calcium is __________
    answer choices
    Reduced
    Synthesized
    Oxidized
    None of the above
  • Question 10
    60 seconds
    Q. What element always has an oxidation number of -1?
    answer choices
    Hydrogen
    Fluorine
    Chlorine
    Iodine
  • Question 11
    60 seconds
    Q.

    What is the oxidation number of O in elemental O2 ?

    answer choices

    0

    -2

    +1

    +2

  • Question 12
    120 seconds
    Q. If in a reaction, copper is reduced; its number of electrons has:
    answer choices
    Increased
    Decreased
    Remained Constant
    Varies Randomly
  • Question 13
    300 seconds
    Q. Which substance is reduced in the following reaction? 
    NaOH + Li --> LiOH + Na
    answer choices
    Li
    Na
    O
    H
  • Question 14
    60 seconds
    Q. Which compound is higher in reactivity, Ag or Ca?
    answer choices
    Ag
    Ca
    Neither
    They're equal
  • Question 15
    30 seconds
    Q. Based on the activity series, will this reaction occur?
    Ni (s) + H2O (l) →
    answer choices
    Yes
    No
  • Question 16
    30 seconds
    Q. Based on the activity series, will this reaction occur?
    Au (s) + HCl (l) →
    answer choices
    Yes
    No
  • Question 17
    30 seconds
    Q. Which one of the following would result in a displacement reaction?
    answer choices
    Iron with magnesium chloride
    magnesium with iron chloride
    Iron with Zinc Sulphate
    gold with silver nitrate
  • Question 18
    30 seconds
    Q. A displacement reaction will occur when...
    answer choices
    a more reactive metal displaces a less reactive metal from its compound.
    A less reactive metal displaces a more reactive metal from its compound
    Displacement only occurs when two of the same metals are reacted 
    Displacement reactions will only occur in metals above iron in the reactivity series
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