Nomenclature Of Ionic And Covalent Compounds Quiz

Reviewed by Zohra Sattar
Zohra Sattar, PhD, Chemistry |
Chemistry Expert
Review Board Member
Dr. Zohra Sattar Waxali earned her doctorate in chemistry and biochemistry from Northwestern University, specializing in the metallomes of cardiac cells and stem cells, and their impact on biological function. Her research encompasses the development of arsenoplatin chemotherapeutics, stapled peptide estrogen receptor inhibitors, and antimicrobial natural products. With her expertise, Dr. Waxali ensures the accuracy and relevance of our chemistry quizzes, contributing to a comprehensive understanding of chemical principles and advancements in the field.
, PhD, Chemistry
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Nomenclature Of Ionic And Covalent Compounds Quiz - Quiz

How good are you at naming ionic and covalent compounds? Can you pass this "Nomenclature of ionic and covalent compounds quiz?" Play the quiz and test your understanding of chemical bonding. Here, you will be asked to pick the correct name of the formula of a given chemical compound. Do you think you can do so? Take the quiz to find out how much you really know.


Questions and Answers
  • 1. 

    Which is the name of Na2S?

    • A.

      Sodium sulfide

    • B.

      Sodium sulfate

    • C.

      Sodium disulfide

    • D.

      Sodium sulfite

    Correct Answer
    A. Sodium sulfide
    Explanation
    Na2S is sodium sulfide. It is composed of sodium (Na) ions and sulfide (S) ions. In this compound, there are two sodium ions for every sulfide ion, hence the formula Na2S. Sodium sulfide is commonly used in various industrial processes, such as in the manufacture of chemicals, dyes, and pharmaceuticals.

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  • 2. 

    Which is NOT an ionic compound?

    • A.

      SO2

    • B.

      NaCl

    • C.

      LiOH

    • D.

      MgO

    Correct Answer
    A. SO2
    Explanation
    SO2 is not an ionic compound because it consists of covalent bonds rather than ionic bonds. Sulfur and oxygen are both nonmetals. In SO2, sulfur forms a double bond with one oxygen atom and a single bond with another oxygen atom. This sharing of electrons between atoms creates a covalent bond, where the electrons are shared rather than transferred. In contrast, NaCl, LiOH, and MgO are all ionic compounds because they are formed by the transfer of electrons between atoms, resulting in the formation of ions with opposite charges that are held together by electrostatic forces.

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  • 3. 

    Write the formula for dinitrogen trichloride.

    Correct Answer
    N2Cl3
    Explanation
    The formula for dinitrogen trichloride is N2Cl3. This is because the compound contains two nitrogen atoms (N2) and three chlorine atoms (Cl3). The subscript numbers indicate the number of atoms present in the compound.

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  • 4. 

    Which is the name of SeO

    • A.

      Selenium monoxide

    • B.

      Silver oxide

    • C.

      Selenium oxide

    • D.

      Monoselenium monoxide

    Correct Answer
    A. Selenium monoxide
    Explanation
    Selenium monoxide is the correct answer because it accurately represents the compound formed by the elements selenium and oxygen. The name "selenium monoxide" follows the naming convention for binary compounds, where the first element is named followed by the second element with the -ide suffix. In this case, selenium is the first element, and oxygen is the second element, resulting in the name selenium monoxide.

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  • 5. 

    The formula for potassium carbonate is K2CO3.

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    The formula for potassium carbonate is K2CO3 because it contains two potassium atoms (K) and one carbonate ion (CO3). The subscript 2 indicates that there are two potassium atoms, and the CO3 indicates the presence of one carbonate ion, which consists of one carbon atom and three oxygen atoms. The potassium ion has a 1+ charge, and the carbonate ion has a 2- charge. Therefore, the correct formula for potassium carbonate is K2CO3.

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  • 6. 

    Select all the covalent compounds

    • A.

      SO3

    • B.

      P2O5

    • C.

      Ag2O

    • D.

      N2O3

    • E.

      KOH

    Correct Answer(s)
    A. SO3
    B. P2O5
    D. N2O3
    Explanation
    The correct answer includes SO3, P2O5, and N2O3. These compounds are all covalent because they are formed by the sharing of electrons between nonmetal atoms. In contrast, Ag2O and KOH are both ionic compounds. Ag2O is formed by the transfer of electrons from the metal Ag to the nonmetal O, while KOH is formed by the transfer of electrons from the metal K to the nonmetal O.

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  • 7. 

    Write the formula of carbon tetrachloride 

    Correct Answer(s)
    CCl4
    Explanation
    The correct answer is CCl4 because carbon tetrachloride is a compound consisting of one carbon atom bonded to four chlorine atoms. The chemical formula CCl4 represents this arrangement, with the symbol "C" representing carbon and "Cl" representing chlorine.

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  • 8. 

    Write the formula of silver nitrate

    Correct Answer(s)
    AgNO3
    Explanation
    The formula for silver nitrate is AgNO3. This compound consists of one silver atom (Ag) and one nitrate ion (NO3). The nitrate ion is composed of one nitrogen atom (N) bonded to three oxygen atoms (O). The silver ion has a 1+ charge, and the nitrate ion has a 1- charge. The formula AgNO3 represents the correct combination of these elements in the compound.

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  • 9. 

    Write the formula of aluminum carbonate

    Correct Answer(s)
    Al2(CO3)3
    Explanation
    The formula Al2(CO3)3 represents aluminum carbonate. In this compound, there are two aluminum atoms (Al) and three carbonate ions (CO3). The carbonate ion consists of one carbon atom (C) bonded to three oxygen atoms (O). The subscript 2 indicates that there are two aluminum atoms, and the subscript 3 indicates that there are three carbonate ions. The aluminum ion has a 3+ charge, and the carbonate ion has a 2- charge. Therefore, the formula Al2(CO3)3 accurately represents the composition of aluminum carbonate.

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  • 10. 

    Write the formula of disulfur trioxide

    Correct Answer(s)
    S2O3
    Explanation
    The correct formula for disulfur trioxide is S2O3. Disulfur trioxide is a chemical compound composed of two sulfur atoms and three oxygen atoms. The subscript "2" indicates that there are two sulfur atoms, while the subscript "3" indicates that there are three oxygen atoms in the compound.

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  • 11. 

    Write the formula of lithium hydroxide

    Correct Answer(s)
    LiOH
    Explanation
    The correct answer is LiOH. Lithium hydroxide is a chemical compound consisting of one lithium ion (Li+) and one hydroxide ion (OH-). The formula LiOH represents the combination of these two ions, with the lithium ion having a +1 charge and the hydroxide ion having a -1 charge. This compound is commonly used in the production of lithium-based batteries and as a strong base in various chemical reactions.

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  • 12. 

    Write the formula of sodium oxide

    Correct Answer(s)
    Na2O
    Explanation
    The formula for sodium oxide is Na2O. This is because sodium is a group 1 element with a +1 charge, while oxygen is a group 16 element with a -2 charge. To balance the charges, two sodium atoms are needed to combine with one oxygen atom, resulting in the formula Na2O.

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  • 13. 

    Write the formula of carbon dioxide

    Correct Answer(s)
    CO2
    Explanation
    The formula CO2 represents carbon dioxide. It consists of one carbon atom (C) bonded to two oxygen atoms (O), hence the subscript 2. This arrangement is consistent with the chemical composition of carbon dioxide, which is a colorless gas composed of carbon and oxygen molecules.

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  • 14. 

    Write the formula of potassium sulfide

    Correct Answer(s)
    K2S
    Explanation
    The formula for potassium sulfide is K2S. This is because potassium has a charge of +1, and sulfide has a charge of -2. In order to balance the charges, two potassium ions (each with a +1 charge) are needed to combine with one sulfide ion (with a -2 charge). Therefore, the formula is K2S.

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  • 15. 

    Which is NOT an ionic compound?

    • A.

      CO2

    • B.

      CaO

    • C.

      Na2SO4

    • D.

      KF

    Correct Answer
    A. CO2
    Explanation
    CO2 is not an ionic compound because it is composed of covalent bonds. In CO2, carbon shares its electrons with oxygen to form a stable molecule. Ionic compounds, on the other hand, are formed by the transfer of electrons from one atom to another, resulting in the formation of positive and negative ions. CaO, Na2SO4, and KF are all examples of ionic compounds because they are made up of positively and negatively charged ions held together by electrostatic forces.

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  • 16. 

    Write the formula of Difluorine trioxide

    Correct Answer
    F2O3
    Explanation
    The formula F2O3 represents Difluorine trioxide. This compound consists of two atoms of fluorine (F) and three atoms of oxygen (O). The prefix "di-" indicates the presence of two fluorine atoms, while the subscript "3" indicates the presence of three oxygen atoms.

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  • 17. 

    Which is the formula of silver phosphate?

    • A.

      Ag3PO4

    • B.

      Ag2(PO4)3

    • C.

      Ag2PO4

    • D.

      Ag3PO3

    Correct Answer
    A. Ag3PO4
    Explanation
    The correct formula for silver phosphate is Ag3PO4. This is because the formula for a compound is determined by the charges of the ions involved. Silver has a charge of +1 and phosphate has a charge of -3. To balance the charges, three silver ions are needed for every one phosphate ion, resulting in the formula Ag3PO4.

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  • 18. 

    Which of the following is NOT a covalent compound?

    • A.

      CaCl2

    • B.

      CO2

    • C.

      NO2

    • D.

      CCl4

    Correct Answer
    A. CaCl2
    Explanation
    CaCl2 is not a covalent compound because it is composed of a metal (calcium) and a non-metal (chlorine). Covalent compounds are formed when two or more non-metals share electrons. In CaCl2, calcium donates electrons to chlorine, resulting in an ionic bond.

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  • 19. 

    Which is the formula of calcium bromide?

    • A.

      CaBr2

    • B.

      CBr2

    • C.

      CaBr

    • D.

      CaB2

    Correct Answer
    A. CaBr2
    Explanation
    The correct formula for calcium bromide is CaBr2. Calcium has a 2+ charge, while bromide has a 1- charge. To balance the charges, two bromide ions are needed for every calcium ion, resulting in the formula CaBr2.

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  • 20. 

    Write the formula of Aluminum carbonate

    Correct Answer
    Al2(CO3)3
    Explanation
    The formula Al2(CO3)3 represents aluminum carbonate. It indicates that there are two aluminum atoms (Al2) and three carbonate ions (CO3) in the compound. This formula follows the rules of ionic compound formation, where the charges of the ions must balance out. The aluminum ion (Al3+) has a charge of +3, while the carbonate ion (CO3 2-) has a charge of -2. To balance the charges, two aluminum ions are needed to combine with three carbonate ions, resulting in the formula Al2(CO3)3.

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  • 21. 

    Which is the formula of Magnesium nitrate?

    • A.

      Mg(NO3)2

    • B.

      MgNO3

    • C.

      MgNO

    • D.

      MgN2

    Correct Answer
    A. Mg(NO3)2
    Explanation
    The correct formula for Magnesium nitrate is Mg(NO3)2. This is because magnesium has a charge of +2 and nitrate has a charge of -1. To balance the charges, two nitrate ions are needed for every one magnesium ion, resulting in the formula Mg(NO3)2.

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  • 22. 

    Name this compound P2O5

    • A.

       Diphosphorus pentoxide

    • B.

       Diphosphorus pentooxide

    • C.

      Phosphorus pentoxide

    • D.

       Phosphorus oxide

    Correct Answer
    A.  Diphosphorus pentoxide
    Explanation
    The correct answer is diphosphorus pentoxide. The compound P2O5 is named diphosphorus pentoxide because it contains two phosphorus atoms (di- indicates two) and five oxygen atoms. The prefix "phosphorus" is used instead of "phosphorus" because the compound contains phosphorus in a lower oxidation state. The suffix "-oxide" indicates that the compound is composed of oxygen atoms.

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  • 23. 

    Write the formula of Calcium hydroxide.

    Correct Answer
    Ca(OH)2
    Explanation
    The formula for calcium hydroxide is Ca(OH)2. In this formula, Ca represents the chemical symbol for calcium, and (OH)2 represents the hydroxide ion, consisting of one oxygen atom and one hydrogen atom. The calcium ion has a 2+ charge, and the hydroxide ion has a 1- charge. The subscript 2 indicates that there are two hydroxide ions present for every calcium ion. Therefore, the formula represents one calcium atom bonded to two hydroxide ions.

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  • 24. 

    The formula for carbon monoxide is CO2.

    • A.

      True

    • B.

      False

    Correct Answer
    B. False
    Explanation
    The given statement is incorrect. The formula for carbon monoxide is CO, not CO2. Carbon monoxide consists of one carbon atom and one oxygen atom, while carbon dioxide consists of one carbon atom and two oxygen atoms.

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Zohra Sattar |PhD, Chemistry |
Chemistry Expert
Dr. Zohra Sattar Waxali earned her doctorate in chemistry and biochemistry from Northwestern University, specializing in the metallomes of cardiac cells and stem cells, and their impact on biological function. Her research encompasses the development of arsenoplatin chemotherapeutics, stapled peptide estrogen receptor inhibitors, and antimicrobial natural products. With her expertise, Dr. Waxali ensures the accuracy and relevance of our chemistry quizzes, contributing to a comprehensive understanding of chemical principles and advancements in the field.

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  • Current Version
  • Mar 26, 2024
    Quiz Edited by
    ProProfs Editorial Team

    Expert Reviewed by
    Zohra Sattar
  • Nov 07, 2017
    Quiz Created by
    Martha Michelis
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