Electrolysis - Iron Ore Quiz

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Electrolysis - Iron Ore Quiz - Quiz


A quiz on the process of electrolysis. Along with the process of Iron ore being converted to pure Iron.


Questions and Answers
  • 1. 

    What is electrolysis?

    • A.

      The passing of electricity through an electrolyte with the moving of uncharged ions to the charged electrodes.

    • B.

      The passing of electricity through an electrolyte with the moving of positive and negative ions to the uncharged electrodes.

    • C.

      The passing of electricity through an anode with the moving of positive and negative ions to the charged electrodes.

    • D.

      The passing of electricity through an electrolyte with the moving of positive and negative ions to the charged electrodes.

    Correct Answer
    D. The passing of electricity through an electrolyte with the moving of positive and negative ions to the charged electrodes.
    Explanation
    In electrolysis, the ions must be charged so they can move to the positive and negatively charged electrodes, which are placed in a electrolyte (which is a substance that conducts electricity).

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  • 2. 

    A(n) ________ is a solid conductor of electricity that is put in a substance that conducts electricity, which has a positive or negative charge.

    Correct Answer
    electrode
    Explanation
    An electrode is a solid conductor of electricity that is placed in a substance that conducts electricity, which can have either a positive or negative charge. Electrodes are commonly used in various electrical systems and devices, such as batteries, electrolysis cells, and electrochemical sensors. They serve as the point of contact for the flow of electric current between the substance and the external circuit.

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  • 3. 

    What is a negatively charged ion?

    • A.

      Cation

    • B.

      Cathode

    • C.

      Anion

    • D.

      Anode

    Correct Answer
    C. Anion
    Explanation
    An anion is a negatively charged ion. In chemistry, an ion is an atom or molecule that has gained or lost electrons, resulting in a positive or negative charge. In the case of an anion, it has gained electrons, giving it a negative charge. This is in contrast to a cation, which is a positively charged ion that has lost electrons. Therefore, the correct answer is anion.

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  • 4. 

    What will NaF(L) become after going through the process of electrolysis?

    • A.

      Sodium and Fluorine

    • B.

      Diatomic Sodium Gas and Fluorine

    • C.

      Sodium and Diatonic Fluorine Gas

    • D.

      Sodium Gas and Fluorine Gas

    Correct Answer
    C. Sodium and Diatonic Fluorine Gas
    Explanation
    During the process of electrolysis, NaF (sodium fluoride) will break down into its constituent elements, sodium (Na) and fluorine (F). The sodium ions will migrate towards the negatively charged electrode (cathode) and gain electrons, forming sodium atoms. The fluoride ions will migrate towards the positively charged electrode (anode) and lose electrons, forming fluorine atoms. Therefore, the correct answer is "Sodium Gas and Diatomic Fluorine Gas."

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  • 5. 

    What will CaCl2 (L) become after going through the process of electrolysis?

    • A.

      Calcium and Chlorine

    • B.

      Calcium and Diatonic Chlorine Gas

    • C.

      Chlorine and Diatonic Calcium Gas

    • D.

      Diatonic Calcium Gas and Chlorine

    Correct Answer
    B. Calcium and Diatonic Chlorine Gas
    Explanation
    During the process of electrolysis, CaCl2 (L) will break down into its constituent elements. Calcium (Ca) and diatomic chlorine gas (Cl2) will be formed as products.

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  • 6. 

    What kind of compounds undergo electrolysis?

    • A.

      Ionic Compounds

    • B.

      Molten Compounds

    • C.

      Molten Ionic Compounds

    Correct Answer
    C. Molten Ionic Compounds
    Explanation
    Molten ionic compounds undergo electrolysis because in their molten state, the ions are free to move and carry an electric current. Ionic compounds are made up of positive and negative ions that are held together by strong electrostatic forces. When the compound is melted, these forces are weakened, allowing the ions to move and conduct electricity. This is why molten ionic compounds, where the ions are mobile, are able to undergo electrolysis.

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  • 7. 

    What is a displacement reaction?

    • A.

      When a less reactive element replaces a more reactive element in a compound

    • B.

      When a more reactive element replaces a less reactive element in a compound

    • C.

      When there is a loss of oxygen, the gaining of Hydrogen, and gaining of an electron

    • D.

      When there is a gain of oxygen, the loss of Hydrogen, and the loss of an electron

    Correct Answer
    B. When a more reactive element replaces a less reactive element in a compound
    Explanation
    A displacement reaction occurs when a more reactive element replaces a less reactive element in a compound. This is because more reactive elements have a higher tendency to gain or lose electrons, allowing them to replace the less reactive element in the compound. This reaction is often observed in reactions involving metals, where a more reactive metal displaces a less reactive metal from its compound.

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  • 8. 

    A redox reaction is a combination of _______ & _______ (separate answers as A,B)

    Correct Answer
    reduction, oxidation
    oxidation, reduction
    Explanation
    A redox reaction is a combination of reduction and oxidation. In a redox reaction, reduction involves gaining electrons, while oxidation involves losing electrons. These two processes occur simultaneously, making redox reactions a combination of reduction and oxidation.

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  • 9. 

    What is an ore?

    • A.

      Rocks that have metal in them

    • B.

      Mineral, rock, or native metal that contains a usable amount of a metal

    • C.

      A mineral that contains a usable amount of a metal

    Correct Answer
    B. Mineral, rock, or native metal that contains a usable amount of a metal
    Explanation
    An ore is a mineral, rock, or native metal that contains a usable amount of a metal. This means that it is a naturally occurring material that can be mined and processed to extract the desired metal. Ores are typically formed through geological processes and can be found in various locations around the world. They are important as a source of valuable metals for various industries, such as mining and manufacturing.

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  • 10. 

    ________ is a metallic element discovered during the Iron age.

    Correct Answer
    Iron
    Explanation
    Iron is a metallic element that was discovered during the Iron age. This period in history is characterized by the extensive use of iron tools and weapons, replacing the previous use of bronze. Iron is a strong and durable metal that played a crucial role in the development of civilization, leading to advancements in agriculture, warfare, and infrastructure. Its discovery and utilization during the Iron age marked a significant milestone in human history.

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  • 11. 

    In this reaction, what is the Oxidizing agent?3CO + Fe2O3 => 2Fe + 3CO2

    Correct Answer
    Iron Oxide
    Iron (III) Oxide
    Explanation
    In the given reaction, iron oxide (Fe2O3) is the oxidizing agent. This is because it causes the carbon monoxide (CO) to be oxidized to carbon dioxide (CO2) while it itself gets reduced to iron (Fe). Iron (III) oxide is the same as iron oxide, so it also acts as the oxidizing agent in this reaction.

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  • 12. 

    In this reaction, what is the Reducing agent?3CO + Fe2O3 => 2Fe + 3CO2

    Correct Answer
    Carbon Monoxide
    CO2
    Explanation
    In the given reaction, carbon monoxide (CO) is the reducing agent. This is because it is being oxidized, losing oxygen atoms, and causing the reduction of iron (Fe2O3) to iron (Fe). On the other hand, carbon dioxide (CO2) is not involved in any redox reaction in this reaction. Therefore, the reducing agent is carbon monoxide (CO).

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  • 13. 

    What is Sustainability?

    • A.

      To be able to maintain a stable structure or process.

    • B.

      Capable of being continued with minimal long-term effect on the environment.

    • C.

      Being able to financially support a business.

    • D.

      All of the above.

    Correct Answer(s)
    A. To be able to maintain a stable structure or process.
    B. Capable of being continued with minimal long-term effect on the environment.
    Explanation
    Sustainability refers to the ability to maintain a stable structure or process, as well as being capable of being continued with minimal long-term effect on the environment. It encompasses both the social and environmental aspects, ensuring that resources are utilized efficiently and that the impact on the environment is minimized. Additionally, sustainability also includes the financial aspect, as it involves the ability to financially support a business while considering long-term viability. Therefore, the correct answer is "To be able to maintain a stable structure or process" and "Capable of being continued with minimal long-term effect on the environment."

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  • 14. 

    What is Iron used for? (Check all that apply)

    • A.

      To make cars, vans, trucks

    • B.

      Building support

    • C.

      Airplanes

    • D.

      Refrigerators and other household appliances

    • E.

      Silverware

    Correct Answer(s)
    A. To make cars, vans, trucks
    B. Building support
    C. Airplanes
    Explanation
    Iron is used in the manufacturing of cars, vans, trucks, airplanes, building support, and silverware. Iron is a strong and durable metal that is commonly used in the construction industry for building structures and support. It is also used in the transportation industry for making vehicles like cars, vans, and trucks, as well as airplanes. Additionally, iron is used in the production of silverware due to its strength and resistance to corrosion.

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  • 15. 

    How is molten slag used in a way that is recycled? (Check all that apply)

    • A.

      To Build Roads

    • B.

      Build Buildings

    • C.

      Pave Sidewalks

    • D.

      Create Landscapes

    Correct Answer(s)
    A. To Build Roads
    D. Create Landscapes
    Explanation
    Molten slag, a byproduct of industrial processes such as steel production, can be recycled and used in various ways. One of the ways it is used is in road construction. The molten slag is cooled and crushed to create a material known as slag aggregate, which is then used as a substitute for traditional aggregates in road building. This helps to conserve natural resources and reduce waste. Additionally, molten slag can also be used to create landscapes, such as in the construction of parks or gardens, where it can be shaped and molded to create decorative features.

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  • 16. 

    What is used to create pure Iron from Iron ore?

    • A.

      Fire Pit

    • B.

      Blast Furnace

    • C.

      Coal Furnace

    • D.

      Oil Furnace

    Correct Answer
    B. Blast Furnace
    Explanation
    A blast furnace is used to create pure iron from iron ore. It is a large structure where iron ore, coke, and limestone are heated at high temperatures to extract iron. The intense heat causes the iron ore to undergo chemical reactions, resulting in the separation of impurities and the production of molten iron. The molten iron is then tapped from the bottom of the furnace and further processed to obtain pure iron.

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  • 17. 

    Coal is a form of carbon which is put into the top of the blast furnace along with limestone and the iron ore to produce pure iron.

    • A.

      True

    • B.

      False

    Correct Answer
    B. False
    Explanation
    Coal is not put into the top of the blast furnace along with limestone and iron ore to produce pure iron. Instead, coke (a form of coal) is used in the blast furnace as a fuel and reducing agent to convert iron ore into iron. Limestone is added to remove impurities and form slag. Therefore, the statement is false.

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