Metals & Their Reactions

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  • 1/8 Questions

    Complete the word equation: Zinc + hydrochloric acid → ? 

    • Zinc hydrochloric + acid
    • Zinc chloride + hydrogen
    • Zinc chloric + hydrogen
    • Zinc hydroacid + chloric
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Metals & Their Reactions - Quiz
About This Quiz

Explore the interactions of metals with various chemicals in 'Metals & Their Reactions'. This quiz assesses knowledge on metal reactivity, practical applications in wiring, and chemical reaction equations, enhancing understanding of basic inorganic chemistry principles.

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  • 2. 

    Which of the following elements is a good conductor used in electrical wiring? 

    • Iron

    • Sulfur

    • Copper

    • Carbon

    Correct Answer
    A. Copper
    Explanation
    Copper is a good conductor used in electrical wiring because it has a high electrical conductivity. This means that it allows electric current to flow through it easily. Copper is also ductile and malleable, making it easy to shape into wires. Additionally, copper has good thermal conductivity, which helps dissipate heat generated by the flow of electricity. These properties make copper an ideal choice for electrical wiring as it ensures efficient and safe transmission of electricity.

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  • 3. 

    Which two chemicals can be used to make copper nitrate?

    • Copper hydroxide and nitric acid

    • Copper oxide and hydrochloric acid

    • Copper and nitrogen dioxide

    • Copper carbonate and sulfuric acid

    Correct Answer
    A. Copper hydroxide and nitric acid
    Explanation
    Copper hydroxide and nitric acid can be used to make copper nitrate. Copper hydroxide is a compound containing copper and hydroxide ions, while nitric acid is a strong acid containing nitrate ions. When these two chemicals react, the copper ions from copper hydroxide combine with the nitrate ions from nitric acid, forming copper nitrate. This reaction is a typical example of an acid-base reaction, where the hydroxide ions from copper hydroxide neutralize the hydrogen ions from nitric acid, resulting in the formation of water. The remaining copper and nitrate ions combine to form copper nitrate.

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  • 4. 

    Complete the word equation: Magnesium + nitric acid → ?

    • Magnesium nitric + acid

    • Magnesium nitrate + oxygen

    • Magnesium nitrate + carbon dioxide + water

    • Magnesium nitrate + hydrogen

    Correct Answer
    A. Magnesium nitrate + hydrogen
    Explanation
    When magnesium reacts with nitric acid, it forms magnesium nitrate and hydrogen gas. This is because magnesium is a metal and nitric acid is an acid. The reaction between a metal and an acid typically produces a salt (in this case, magnesium nitrate) and hydrogen gas.

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  • 5. 

    Which of the following metals reacts most vigorously with cold water?

    • Sodium

    • Iron

    • Copper

    • Gold

    Correct Answer
    A. Sodium
    Explanation
    Sodium reacts most vigorously with cold water because it is a highly reactive alkali metal. When sodium comes into contact with water, it undergoes a violent reaction, producing hydrogen gas and sodium hydroxide. This reaction is exothermic and releases a large amount of heat. In contrast, iron, copper, and gold are less reactive and do not react with cold water.

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  • 6. 

    Which of the following metals could produce zinc metal, if heated with zinc oxide?

    • Aluminium

    • Magnesium

    • Copper

    • Silver

    Correct Answer
    A. Aluminium
    Explanation
    Aluminium is the correct answer because it is more reactive than zinc. When heated with zinc oxide, aluminium can displace zinc from its compound and form zinc metal. This is known as a displacement reaction, where a more reactive metal displaces a less reactive metal from its compound. Magnesium, copper, and silver are all less reactive than zinc, so they cannot displace zinc from its compound and produce zinc metal.

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  • 7. 

    Which of the following metal mixtures could be separated from one another by adding dilute hydrochloric acid? Assume that the metals simply mixed, and have not formed an alloy.

    • Sodium and potassium

    • Magnesium and zinc

    • Magnesium and copper

    • Copper and silver

    Correct Answer
    A. Magnesium and copper
    Explanation
    Magnesium and copper can be separated from each other by adding dilute hydrochloric acid. This is because magnesium reacts with hydrochloric acid to form magnesium chloride and hydrogen gas, while copper does not react with hydrochloric acid. Therefore, when hydrochloric acid is added to the mixture of magnesium and copper, the magnesium will dissolve and separate from the copper.

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  • 8. 

    Complete the word equation: Zinc carbonate + hydrochloric acid → ?

    • Zinc chloride + carbon dioxide

    • Zinc chloride + carbon dioxide + water

    • Zinc chloride + water

    • Zinc chloride + oxygen

    Correct Answer
    A. Zinc chloride + carbon dioxide + water
    Explanation
    When zinc carbonate reacts with hydrochloric acid, it forms zinc chloride, carbon dioxide, and water. This is a typical example of a double replacement reaction, where the cations of the reactants switch places to form new compounds. In this case, the zinc cation from zinc carbonate combines with the chloride anion from hydrochloric acid to form zinc chloride. Simultaneously, the carbonate anion from zinc carbonate combines with the hydrogen cation from hydrochloric acid to form carbon dioxide and water.

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  • Current Version
  • Mar 21, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Jul 02, 2014
    Quiz Created by
    CyBc

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