Chemistry Challenge: Polyatomic Ions 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 of 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 Read moreyour mastery of these essential chemical entities. Embark on this journey of discovery and test your understanding with the Polyatomic Ions Quiz today!
Polyatomic Ions Questions and Answers
- 1.
What is the name of this polyatomic ion: NH4+
- A.
Ammonium
- B.
Selenate
- C.
Oxygen
- D.
Carbonate
Correct Answer
A. AmmoniumExplanation
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.Rate this question:
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- 2.
What is the name of this polyatomic ion: NO3-
- A.
Permanganate
- B.
Nitrite
- C.
Nitrate
- D.
Chromrate
Correct Answer
C. NitrateExplanation
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.Rate this question:
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- 3.
What is the name of this polyatomic ion: NO2-
- A.
Nitrite
- B.
Nitrate
- C.
Nitrogen Dioxide
- D.
Sodium Dioxide
Correct Answer
A. NitriteExplanation
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.Rate this question:
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- 4.
What is the name of this polyatomic ion: CrO42-
- A.
Dichromate
- B.
Perchromate
- C.
Chloride
- D.
Chromate
Correct Answer
D. ChromateExplanation
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.Rate this question:
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- 5.
What is the name of this polyatomic ion: Cr2O72-
- A.
Chromate
- B.
Dichromate
- C.
Chloride
- D.
Perchloride
Correct Answer
B. DichromateExplanation
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.Rate this question:
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- 6.
What is the name of this polyatomic ion: CN-
- A.
Hydroxide
- B.
Cyanide
- C.
Permanganate
- D.
Chlorate
Correct Answer
B. CyanideExplanation
The correct answer is Cyanide. The name of the polyatomic ion CN- is cyanide. This ion consists of a carbon atom bonded to a nitrogen atom with a triple bond. Cyanide is a highly toxic compound and is commonly found in certain chemicals and compounds. It is important to handle cyanide with extreme caution due to its toxicity.Rate this question:
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- 7.
What is the name of this polyatomic ion: MnO4-
- A.
Permanganate
- B.
Manganese Peroxygenate
- C.
Magnesium Oxide
- D.
Manganese Tetroxide
Correct Answer
A. PermanganateExplanation
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.Rate this question:
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- 8.
What is the name of this polyatomic ion: O22-
- A.
Dioxide
- B.
Oxygen
- C.
Peroxide
- D.
Monoxide
Correct Answer
C. PeroxideExplanation
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.Rate this question:
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- 9.
What is the name of this polyatomic ion: SO42-
- A.
Sulfate
- B.
Sulfite
- C.
Sulfuric Acid
- D.
Sulfur Tetroxide
Correct Answer
A. SulfateExplanation
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.Rate this question:
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- 10.
What is the name of this polyatomic ion: SO32-
- A.
Sulfate
- B.
Sulfite
- C.
Sulfurous Acid
- D.
Sulfur Trioxide
Correct Answer
B. SulfiteExplanation
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.Rate this question:
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- 11.
What is the name of this polyatomic ion: HSO4-
- A.
Sulfurous Acid
- B.
Sulfuric Acid
- C.
Hydrogen Sulfate or Bisulfate
- D.
Hydrogen Sulfite or Bisulfite
Correct Answer
C. Hydrogen Sulfate or BisulfateExplanation
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.Rate this question:
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- 12.
What is the name of this polyatomic ion: HSO3-
- A.
Hydrogen Sulfite or Bisulfite
- B.
Hydrogen Sulfate or Bisulfate
- C.
Sulfurous Acid
- D.
Sulfuric Acid
Correct Answer
A. Hydrogen Sulfite or BisulfiteExplanation
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.Rate this question:
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- 13.
What is the name of this polyatomic ion: SeO42-
- A.
Selenium
- B.
Selenate
- C.
Selenous Acid
- D.
Selenic Acid
Correct Answer
B. SelenateExplanation
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.Rate this question:
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- 14.
What is the name of this polyatomic ion: ClO4-
- A.
Chloride
- B.
Chlorate
- C.
Chlorite
- D.
Perchlorate
Correct Answer
D. PerchlorateExplanation
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.Rate this question:
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- 15.
What is the name of this polyatomic ion: ClO3-
- A.
Chloride
- B.
Chlorite
- C.
Perchlorate
- D.
Chlorate
Correct Answer
D. ChlorateExplanation
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.Rate this question:
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- 16.
What is the name of this polyatomic ion: ClO2-
- A.
Chlorite
- B.
Chloride
- C.
Chlorate
- D.
Perchlorate
Correct Answer
A. ChloriteExplanation
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.Rate this question:
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- 17.
What is the name of this polyatomic ion: ClO-
- A.
Hypochlorite
- B.
Chlorite
- C.
Chlorate
- D.
Perchlorate
Correct Answer
A. HypochloriteExplanation
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.Rate this question:
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- 18.
What is the name of this polyatomic ion: OH-
- A.
Oxygen Monohydrogen
- B.
Water
- C.
Hydroxide
- D.
Hydroxygen
Correct Answer
C. HydroxideExplanation
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.Rate this question:
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- 19.
What is the name of this polyatomic ion: C2H3O2- or CH3COO-
- A.
Dicarbon Trihydrogen Dioxide
- B.
Acetate
- C.
Carbon Monoxide
- D.
Carbonic Acid
Correct Answer
B. AcetateExplanation
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.Rate this question:
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- 20.
What is the name of this polyatomic ion: CO32-
- A.
Hydrogen Carbonate or Bicarbonate
- B.
Carbonic Acid
- C.
Carbonate
- D.
Carbonite
Correct Answer
C. CarbonateExplanation
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.Rate this question:
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- 21.
What is the name of this polyatomic ion: HCO3-
- A.
Carbonite
- B.
Carbonic Acid
- C.
Carbonate
- D.
Hydrogen Carbonate or Bicarbonate
Correct Answer
D. Hydrogen Carbonate or BicarbonateExplanation
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.Rate this question:
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- 22.
What is the name of this polyatomic ion: PO43-
- A.
Phosphate
- B.
Phosphite
- C.
Phosphorous Acid
- D.
Phosphoric Acid
Correct Answer
A. pHospHateExplanation
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.Rate this question:
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- 23.
What is the name of this polyatomic ion: PO33-
- A.
Phosphoric Acid
- B.
Phosphorous Acid
- C.
Phosphate
- D.
Phosphite
Correct Answer
D. pHospHiteExplanation
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.Rate this question:
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- 24.
What is the name of this polyatomic ion: HPO42-
- A.
Hydrogen Phosphite
- B.
Hydrogen Phosphate
- C.
Biphosphate
- D.
Biphosphite
Correct Answer
B. Hydrogen pHospHateExplanation
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.Rate this question:
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- 25.
What is the name of this polyatomic ion: H2PO4-
- A.
Dihydrogen Phosphate
- B.
Hydrogen Phosphate
- C.
Phosphoric Acid
- D.
Phosphorous Acid
Correct Answer
A. Dihydrogen pHospHateExplanation
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.Rate this question:
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Current Version
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Mar 15, 2024Quiz Edited by
ProProfs Editorial Team -
Jan 21, 2017Quiz Created by
StefanieBennett
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