Chemical Dominoes - Activity 4 Quiz

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    To stop a circuit from lighting, you must disrupt the flow of

    • Neutrons
    • Protons
    • Electrons
    • Moles
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Electrochemistry Quizzes & Trivia
About This Quiz

The 'Chemical Dominoes - Activity 4 Quiz' explores key concepts in electrochemistry, including redox reactions, electron flow in batteries, and the behavior of metals in ionic formations. It assesses understanding of oxidation and reduction, crucial for students in advanced chemistry courses.

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  • 2. 

    Metals will lose electrons to form ______________ ions.

    • Negative

    • Positive

    • Neutral

    • Equal

    Correct Answer
    A. Positive
    Explanation
    Metals have a tendency to lose electrons to achieve a stable electron configuration, which results in the formation of positive ions. This process is known as oxidation, where metals undergo oxidation by losing electrons. Therefore, the correct answer is positive.

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  • 3. 

    Pb3+ + Al(s) -->  Pb(s) + Al3+ Al is _____________.

    • Oxidized

    • Reduced

    • Neutral

    • Acidic

    Correct Answer
    A. Oxidized
    Explanation
    In the given reaction, Pb3+ is reduced to Pb(s) while Al is oxidized to Al3+. This is because Pb3+ gains electrons and is reduced, while Al loses electrons and is oxidized. Therefore, the correct answer is oxidized.

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  • 4. 

    The solid is _____________ and ___________ electrons.

    • Oxidized, gains

    • Oxidized, loses

    • Reduced, gains

    • Reduced, loses

    Correct Answer
    A. Oxidized, loses
    Explanation
    In this question, the solid is undergoing a process called oxidation, which involves the loss of electrons. When a substance is oxidized, it loses electrons, resulting in a positive charge. Therefore, the correct answer is "oxidized, loses."

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  • 5. 

    In order for Hg and Pt to react, Hg will have to

    • Be the solid that is oxidized

    • The solid that is reduced

    • The aqueous that is oxidized

    • The aqueous that is reduced

    Correct Answer
    A. Be the solid that is oxidized
    Explanation
    Hg will have to be the solid that is oxidized because in a redox reaction, oxidation involves the loss of electrons, and the substance that is oxidized is called the reducing agent. Since Hg is being oxidized, it is losing electrons and acting as the reducing agent.

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  • 6. 

    Electrons in a battery flow from

    • Positive to negative

    • Negative to positive

    • They don't flow

    • Cathode to anode

    Correct Answer
    A. Negative to positive
    Explanation
    In a battery, electrons flow from the negative terminal (cathode) to the positive terminal (anode). This flow is due to the difference in charge between the two terminals. Electrons are negatively charged particles, so they are attracted to the positive terminal and repelled by the negative terminal. As a result, they move from the negative terminal to the positive terminal, creating an electric current.

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  • 7. 

    Ca2+ ions WILL  react with

    • Magnesium(s)

    • Copper (s)

    • Potassium (s)

    • Silver (s)

    Correct Answer
    A. Potassium (s)
    Explanation
    Ca2+ ions will react with potassium (s) because potassium is more reactive than calcium. In a reaction, calcium will lose two electrons to form Ca2+ ions, while potassium will lose one electron to form K+ ions. Since potassium has a higher reactivity, it will displace calcium in a reaction and form a compound with the calcium ions. This reaction is known as a displacement reaction.

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  • 8. 

    Nickel (s) will react with

    • Lithium (aq)

    • Zinc (aq)

    • Iron (aq)

    • Mercury (aq)

    Correct Answer
    A. Mercury (aq)
    Explanation
    Nickel is a less reactive metal compared to lithium, zinc, iron, and mercury. It will not react with lithium, zinc, or iron as they are more reactive metals. However, nickel can react with mercury, as mercury is a more reactive metal. This reaction will result in the formation of a compound between nickel and mercury.

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  • 9. 

    1.       Given the balanced ionic equation: Zn(s) + Cu2+(aq) à Zn2+(aq) + Cu(s) Which equation represents the oxidation half-reaction?

    • Cu2+(aq) --> Cu(s) +2e-

    • Cu2+(aq) + 2e- -->Cu(s)

    • Zn(s) + 2e- --> Zn2+(aq)

    • Zn(s) --> Zn2+(aq) + 2e-

    Correct Answer
    A. Zn(s) --> Zn2+(aq) + 2e-
    Explanation
    The equation Zn(s) --> Zn2+(aq) + 2e- represents the oxidation half-reaction because it shows the loss of electrons from the zinc atoms (Zn(s) to Zn2+(aq)). In this reaction, zinc is being oxidized, which means it is losing electrons and increasing its oxidation state. The electrons released during this reaction are shown on the right side of the equation.

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  • 10. 

    1.       Given the redox reaction: Cr3+ + Al à Cr + Al3+ As the reaction takes place, there is a transfer of

    • Electrons from Al to Cr3+

    • Electrons from Cr3+ to Al

    • Protons from Al to Cr3+

    • Protons from Cr3+ to Al

    Correct Answer
    A. Electrons from Al to Cr3+
    Explanation
    In the given redox reaction, Cr3+ is being reduced to Cr, which means it is gaining electrons. On the other hand, Al is being oxidized to Al3+, which means it is losing electrons. Therefore, there is a transfer of electrons from Al to Cr3+ during the reaction.

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  • Current Version
  • Mar 14, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Dec 21, 2011
    Quiz Created by
    Lmmurp2

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