Chemistry Challenge: Polyatomic Ions Quiz

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  • 1/25 Questions

    What is the name of this polyatomic ion: CN-

    • Hydroxide
    • Cyanide
    • Permanganate
    • Chlorate
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About This Quiz

Dive into the fascinating world of chemistry with this challenging quiz focused on polyatomic ions. Polyatomic ions are groups of atoms carrying a net electrical charge, forming ions through the loss or gain of electrons. These ions play a crucial role in various chemical reactions and are essential components in understanding chemical compounds.

Test your knowledge and sharpen your understanding See moreof polyatomic ions with a series of thought-provoking questions. Explore the properties, structures, and charges of commonly encountered polyatomic ions, as well as their significance in chemical equations and formulas.

Prepare to unravel the complexities of polyatomic ions and showcase your mastery of these essential chemical entities. Embark on this journey of discovery and test your understanding with the Polyatomic Ions Quiz today!

Chemistry Challenge: Polyatomic Ions Quiz - Quiz

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  • 2. 

    What is the name of this polyatomic ion: NH4+

    • Ammonium

    • Selenate

    • Oxygen

    • Carbonate

    Correct Answer
    A. Ammonium
    Explanation
    The correct answer is Ammonium. Ammonium is a polyatomic ion with a positive charge of +1. It consists of one nitrogen atom bonded to four hydrogen atoms. It is commonly found in ammonium salts and is often used in fertilizers and cleaning products.

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  • 3. 

    What is the name of this polyatomic ion: OH-

    • Oxygen Monohydrogen

    • Water

    • Hydroxide

    • Hydroxygen

    Correct Answer
    A. Hydroxide
    Explanation
    The correct answer is Hydroxide. The polyatomic ion OH- is called hydroxide. It consists of one oxygen atom and one hydrogen atom, and it carries a negative charge. Hydroxide ions are commonly found in bases and are responsible for the alkaline properties of substances like sodium hydroxide and calcium hydroxide.

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  • 4. 

    What is the name of this polyatomic ion: SO42-

    • Sulfate

    • Sulfite

    • Sulfuric Acid

    • Sulfur Tetroxide

    Correct Answer
    A. Sulfate
    Explanation
    The correct answer is Sulfate. The polyatomic ion SO42- is known as sulfate. It consists of one sulfur atom bonded to four oxygen atoms, with a charge of -2. Sulfate is commonly found in various compounds and is an important component in many chemical reactions and biological processes.

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  • 5. 

    What is the name of this polyatomic ion: C2H3O2- or CH3COO-

    • Dicarbon Trihydrogen Dioxide

    • Acetate

    • Carbon Monoxide

    • Carbonic Acid

    Correct Answer
    A. Acetate
    Explanation
    The correct answer is Acetate. Acetate is the name of the polyatomic ion C2H3O2- or CH3COO-. It is derived from acetic acid and is commonly found in vinegar.

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  • 6. 

    What is the name of this polyatomic ion: PO43-

    • Phosphate

    • Phosphite

    • Phosphorous Acid

    • Phosphoric Acid

    Correct Answer
    A. Phosphate
    Explanation
    The correct answer is Phosphate. Phosphate is the name of the polyatomic ion with the formula PO43-. It is formed by the combination of one phosphorus atom and four oxygen atoms. Phosphate ions are commonly found in biological systems, such as DNA and ATP, and play important roles in cellular processes and energy transfer.

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  • 7. 

    What is the name of this polyatomic ion: HCO3-

    • Carbonite

    • Carbonic Acid

    • Carbonate

    • Hydrogen Carbonate or Bicarbonate

    Correct Answer
    A. Hydrogen Carbonate or Bicarbonate
    Explanation
    The correct answer is Hydrogen Carbonate or Bicarbonate. This is because the polyatomic ion HCO3- consists of one hydrogen atom (H), one carbon atom (C), and three oxygen atoms (O). The presence of the hydrogen atom in the ion indicates that it is a hydrogen carbonate or bicarbonate ion.

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  • 8. 

    What is the name of this polyatomic ion: HPO42-

    • Hydrogen Phosphite

    • Hydrogen Phosphate

    • Biphosphate

    • Biphosphite

    Correct Answer
    A. Hydrogen Phosphate
    Explanation
    The correct answer is Hydrogen Phosphate because the ion HPO42- is composed of one hydrogen atom (H) and four oxygen atoms (O), bonded to a central phosphorus atom (P). The prefix "hydrogen" indicates the presence of the hydrogen atom, and "phosphate" refers to the combination of the phosphorus atom and the oxygen atoms.

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  • 9. 

    What is the name of this polyatomic ion: NO2-

    • Nitrite

    • Nitrate

    • Nitrogen Dioxide

    • Sodium Dioxide

    Correct Answer
    A. Nitrite
    Explanation
    The correct answer is Nitrite. The polyatomic ion NO2- is known as nitrite. It consists of one nitrogen atom and two oxygen atoms, with a negative charge. Nitrite is commonly found in various chemical compounds and is used in different industries, such as food preservation and water treatment.

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  • 10. 

    What is the name of this polyatomic ion: CO32-

    • Hydrogen Carbonate or Bicarbonate

    • Carbonic Acid

    • Carbonate

    • Carbonite

    Correct Answer
    A. Carbonate
    Explanation
    The correct answer is Carbonate. Carbonate is the name of the polyatomic ion with the chemical formula CO32-. It consists of one carbon atom bonded to three oxygen atoms, and it has a charge of -2. This ion is commonly found in compounds such as calcium carbonate (CaCO3) and sodium carbonate (Na2CO3). Hydrogen carbonate or bicarbonate (HCO3-) is a different polyatomic ion that consists of one hydrogen atom bonded to one carbon atom and three oxygen atoms, with a charge of -1. Carbonic acid is the corresponding acid for carbonate, and carbonite is not a valid polyatomic ion.

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  • 11. 

    What is the name of this polyatomic ion: HSO4-

    • Sulfurous Acid

    • Sulfuric Acid

    • Hydrogen Sulfate or Bisulfate

    • Hydrogen Sulfite or Bisulfite

    Correct Answer
    A. Hydrogen Sulfate or Bisulfate
    Explanation
    The correct answer is Hydrogen Sulfate or Bisulfate. The polyatomic ion HSO4- is called hydrogen sulfate or bisulfate. It consists of one hydrogen atom, one sulfur atom, and four oxygen atoms. The presence of the hydrogen atom makes it an acid, and it can donate a hydrogen ion (H+) in a chemical reaction. The terms sulfate and bisulfate are used interchangeably to refer to this ion.

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  • 12. 

    What is the name of this polyatomic ion: Cr2O72-

    • Chromate

    • Dichromate

    • Chloride

    • Perchloride

    Correct Answer
    A. Dichromate
    Explanation
    The correct answer is Dichromate. The polyatomic ion with a formula of Cr2O72- is called dichromate. This ion consists of two chromium atoms bonded to seven oxygen atoms. The name "dichromate" is derived from the presence of two chromium atoms in the ion.

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  • 13. 

    What is the name of this polyatomic ion: MnO4-

    • Permanganate

    • Manganese Peroxygenate

    • Magnesium Oxide

    • Manganese Tetroxide

    Correct Answer
    A. Permanganate
    Explanation
    The correct answer is "Permanganate." The polyatomic ion MnO4- is known as permanganate. It consists of one manganese atom bonded to four oxygen atoms and carries a negative charge. Permanganate ions are commonly used as powerful oxidizing agents in various chemical reactions.

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  • 14. 

    What is the name of this polyatomic ion: NO3-

    • Permanganate

    • Nitrite

    • Nitrate

    • Chromrate

    Correct Answer
    A. Nitrate
    Explanation
    The name of the polyatomic ion NO3- is nitrate. This is because the ion consists of one nitrogen atom bonded to three oxygen atoms, resulting in a negative charge. The suffix "-ate" is used to indicate that the ion has one more oxygen atom than the related "nitrite" ion, which has the formula NO2-. Therefore, the correct name for the ion NO3- is nitrate.

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  • 15. 

    What is the name of this polyatomic ion: ClO2-

    • Chlorite

    • Chloride

    • Chlorate

    • Perchlorate

    Correct Answer
    A. Chlorite
    Explanation
    The name of the polyatomic ion ClO2- is chlorite. This is because the ion has one chlorine atom (Cl) and two oxygen atoms (O), resulting in the formula ClO2-. The naming of polyatomic ions follows a specific set of rules, and in this case, the ion is named chlorite based on the number of oxygen atoms present.

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  • 16. 

    What is the name of this polyatomic ion: SO32-

    • Sulfate

    • Sulfite

    • Sulfurous Acid

    • Sulfur Trioxide

    Correct Answer
    A. Sulfite
    Explanation
    The correct answer is Sulfite. The name of the polyatomic ion SO32- is sulfite. It consists of one sulfur atom bonded to three oxygen atoms. Sulfite ions are commonly found in compounds and are used in various industrial processes.

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  • 17. 

    What is the name of this polyatomic ion: ClO3-

    • Chloride

    • Chlorite

    • Perchlorate

    • Chlorate

    Correct Answer
    A. Chlorate
    Explanation
    The correct answer is Chlorate. The polyatomic ion ClO3- is called chlorate. It consists of one chlorine atom bonded to three oxygen atoms. Chloride refers to the Cl- ion, chlorite refers to the ClO2- ion, and perchlorate refers to the ClO4- ion.

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  • 18. 

    What is the name of this polyatomic ion: CrO42-

    • Dichromate

    • Perchromate

    • Chloride

    • Chromate

    Correct Answer
    A. Chromate
    Explanation
    The correct answer is "Chromate" because the formula of the polyatomic ion CrO42- matches the formula of the chromate ion. The chromate ion consists of one chromium atom bonded to four oxygen atoms, and it has a charge of -2. Therefore, "Chromate" is the correct name for this polyatomic ion.

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  • 19. 

    What is the name of this polyatomic ion: SeO42-

    • Selenium

    • Selenate

    • Selenous Acid

    • Selenic Acid

    Correct Answer
    A. Selenate
    Explanation
    The correct answer is Selenate. The polyatomic ion SeO42- is called selenate. It consists of one selenium atom bonded to four oxygen atoms. Selenate ions are negatively charged and are commonly found in compounds such as sodium selenate and potassium selenate.

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  • 20. 

    What is the name of this polyatomic ion: H2PO4-

    • Dihydrogen Phosphate

    • Hydrogen Phosphate

    • Phosphoric Acid

    • Phosphorous Acid

    Correct Answer
    A. Dihydrogen Phosphate
    Explanation
    The correct answer is Dihydrogen Phosphate. This is because the ion H2PO4- is composed of two hydrogen atoms (di- meaning two), one phosphorus atom, and four oxygen atoms. The name "dihydrogen" indicates the presence of two hydrogen atoms, and "phosphate" refers to the combination of phosphorus and oxygen atoms.

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  • 21. 

    What is the name of this polyatomic ion: HSO3-

    • Hydrogen Sulfite or Bisulfite

    • Hydrogen Sulfate or Bisulfate

    • Sulfurous Acid

    • Sulfuric Acid

    Correct Answer
    A. Hydrogen Sulfite or Bisulfite
    Explanation
    The name of the polyatomic ion HSO3- is hydrogen sulfite or bisulfite. This ion consists of one hydrogen atom bonded to a sulfite ion (SO3^2-). The prefix "bi-" is used to indicate that there is only one hydrogen atom in the ion. The alternative name "bisulfite" is also commonly used to describe this ion.

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  • 22. 

    What is the name of this polyatomic ion: ClO4-

    • Chloride

    • Chlorate

    • Chlorite

    • Perchlorate

    Correct Answer
    A. Perchlorate
    Explanation
    Perchlorate is the correct answer because the ion ClO4- is known as perchlorate. The prefix "per-" indicates that there are more oxygen atoms in the ion compared to other chlorate ions. This ion consists of one chlorine atom bonded to four oxygen atoms, giving it a charge of -1. The name "perchlorate" accurately describes the composition and charge of this polyatomic ion.

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  • 23. 

    What is the name of this polyatomic ion: PO33-

    • Phosphoric Acid

    • Phosphorous Acid

    • Phosphate

    • Phosphite

    Correct Answer
    A. Phosphite
    Explanation
    The correct answer is Phosphite. Phosphite is the name of the polyatomic ion with the formula PO33-. It is derived from phosphorous acid, which is H3PO3. The suffix "-ite" is used to indicate a polyatomic ion with one less oxygen atom than the "-ate" form. Therefore, the correct name for the given polyatomic ion is Phosphite.

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  • 24. 

    What is the name of this polyatomic ion: ClO-

    • Hypochlorite

    • Chlorite

    • Chlorate

    • Perchlorate

    Correct Answer
    A. Hypochlorite
    Explanation
    Hypochlorite is the correct name for the ClO- ion. In chemical nomenclature, the prefix "hypo-" indicates a lower oxidation state or fewer oxygen atoms compared to other related ions. In this case, hypochlorite contains one chlorine atom and one oxygen atom, making it the least oxidized form of chlorine with oxygen. Hypochlorite (ClO-) is a potent oxidizing agent widely used in disinfection and bleaching processes. 

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  • 25. 

    What is the name of this polyatomic ion: O22-

    • Dioxide

    • Oxygen

    • Peroxide

    • Monoxide

    Correct Answer
    A. Peroxide
    Explanation
    The name of the polyatomic ion O22- is peroxide. This is because the prefix "per-" indicates that there are more oxygen atoms present in the ion compared to the regular oxide ion. In this case, there are two oxygen atoms, hence the name peroxide.

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  • Current Version
  • Mar 15, 2024
    Quiz Edited by
    ProProfs Editorial Team
  • Jan 21, 2017
    Quiz Created by
    StefanieBennett

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