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Quizzes > High School Quizzes > Science

Ionic Naming Practice Quiz

Sharpen your skills with interactive naming exercises

Difficulty: Moderate
Grade: Grade 10
Study OutcomesCheat Sheet
Paper art depicting a trivia quiz on Ionic Naming Challenge for high school chemistry students.

What is the correct name for NaCl?
Sodium chloride
Sodium chlorate
Sodium hypochlorite
Sodium perchlorate
NaCl consists of sodium ions and chloride ions. The compound is named by simply stating the cation followed by the anion.
What is the formula for magnesium oxide?
MgO
Mg2O
MgO2
Mg2O3
Magnesium has a 2+ charge and oxygen has a 2- charge; hence, they combine in a 1:1 ratio. The resulting formula is MgO.
Which of the following is the correct name for Fe2O3?
Iron(III) oxide
Iron(II) oxide
Ferrous oxide
Iron oxide
In Fe2O3, each oxygen ion carries a -2 charge, summing to -6. To balance this, each iron must have a +3 charge, resulting in the name iron(III) oxide.
What is the formula for aluminum chloride?
AlCl3
AlCl
Al2Cl3
AlCl2
Aluminum forms a 3+ ion and chloride is 1-, so three chloride ions are required to balance one aluminum ion. This gives the formula AlCl3.
Which ion is formed by chlorine in NaCl?
Chloride ion (Cl-)
Chlorate ion (ClO3-)
Hypochlorite ion (ClO-)
Perchlorate ion (ClO4-)
In NaCl, chlorine gains an electron to form a chloride ion with a -1 charge. This straightforward ionic formation leads to the name chloride ion.
What is the correct name for CuO?
Copper(I) oxide
Copper(II) oxide
Cuprous oxide
Copper oxide
CuO indicates that copper is in the +2 oxidation state. The systematic naming convention requires the oxidation state to be specified in Roman numerals, making it copper(II) oxide.
What is the chemical formula for iron(II) sulfide?
FeS
Fe2S3
FeS2
Fe2S
Iron(II) indicates that the iron ion has a +2 charge and sulfide has a -2 charge. A one-to-one ratio between these ions gives the formula FeS.
Select the correct formula for aluminum oxide.
Al2O3
AlO3
Al3O2
Al2O
Aluminum has a 3+ charge and oxide has a 2- charge. Two aluminum ions (totaling +6) and three oxide ions (totaling -6) are needed to balance the charge, resulting in Al2O3.
Which name correctly matches the compound K2SO4?
Potassium sulfate
Dipotassium sulfate
Potassium sulfite
Potassium sulfide
K2SO4 is composed of two potassium ions and one sulfate ion (SO4^2-). The systematic name is derived by naming the cation followed by the anion, resulting in potassium sulfate.
What is the proper name for the compound PbO2?
Lead(IV) oxide
Lead(II) oxide
Plumbous oxide
Plumbic oxide
In PbO2, oxygen contributes a total charge of -4, so lead must have a +4 charge to balance. The correct systematic name is lead(IV) oxide.
Which statement is true regarding the naming of ionic compounds with transition metals?
The oxidation state of the metal is indicated by Roman numerals in parentheses
Prefixes are used to denote the number of metal atoms
The oxidation state is always +1 and doesn't need to be shown
The metal is named after the anion it is paired with
Transition metals can have multiple oxidation states. Using Roman numerals in the compound's name clearly indicates which oxidation state is present.
What is the correct name for Zn(NO3)2?
Zinc nitrate
Zinc dinitrate
Zinc mononitrate
Dizinc nitrate
Zinc has a +2 charge and each nitrate ion has a -1 charge. Two nitrate ions are needed to balance one zinc ion, making the correct name zinc nitrate.
What is the formula for sodium phosphate?
Na3PO4
NaPO4
Na2PO4
Na4PO4
The phosphate ion carries a -3 charge while sodium has a +1 charge. Three sodium ions are therefore required to balance one phosphate ion, resulting in Na3PO4.
Which compound is correctly named 'calcium nitrate'?
Ca(NO3)2
Ca(NO3)
Ca3(NO3)2
Ca2(NO3)3
Calcium has a +2 charge and each nitrate ion has a -1 charge. Two nitrate ions combine with one calcium ion to form Ca(NO3)2, which is properly named calcium nitrate.
What is the systematic name for FeCl3?
Iron(III) chloride
Iron(II) chloride
Ferric chloride
Triiron chloride
FeCl3 consists of one iron ion and three chloride ions; to balance the -1 charge from each chloride, iron must be in the +3 oxidation state. This makes the correct name iron(III) chloride.
What is the systematic name for (NH4)2Cr2O7?
Ammonium dichromate
Diammonium dichromate
Ammonium chromate
Ammonium dichromate(VI)
This compound contains the ammonium ion and the dichromate ion (Cr2O7^2-). The systematic name is derived by naming the cation first and then the polyatomic anion, resulting in ammonium dichromate.
What is the formula for cobalt(III) phosphate?
CoPO4
Co3(PO4)2
Co2(PO4)3
Co(PO4)3
Cobalt(III) indicates a +3 charge for cobalt, and the phosphate ion has a -3 charge. Thus, one cobalt ion bonds with one phosphate ion to give the formula CoPO4.
What is the correct systematic name for Fe3O4?
Iron(II,III) oxide
Iron(II) oxide
Iron(III) oxide
Ferric ferrous oxide
Fe3O4 is a mixed oxide containing both Fe2+ and Fe3+ ions. The systematic name reflects this mixed oxidation state as iron(II,III) oxide.
Determine the correct formula for manganese(II) permanganate.
Mn(MnO4)2
Mn2(MnO4)
Mn2(MnO4)2
Mn(MnO4)
Manganese(II) means the manganese cation has a +2 charge while the permanganate ion (MnO4-) carries a -1 charge. Two permanganate ions are necessary to balance the +2 charge, producing Mn(MnO4)2.
What is the proper systematic name for Pb3(PO4)2?
Lead(II) phosphate
Lead(IV) phosphate
Plumbous phosphate
Plumbic phosphate
In Pb3(PO4)2, three lead ions combine with two phosphate ions. For charge neutrality, each lead ion must have a +2 charge, resulting in the name lead(II) phosphate.
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Study Outcomes

  1. Apply systematic nomenclature rules to correctly name ionic compounds.
  2. Analyze oxidation states and ionic charges to determine compound names.
  3. Synthesize naming conventions to resolve naming ambiguities.
  4. Evaluate and verify the accuracy of ionic compound names.
  5. Utilize core chemical principles to enhance test readiness in ionic compound naming.

Ionic Naming Quiz - Practice Test Cheat Sheet

  1. Ionic Compound Basics - When positive cations and negative anions meet, they create neutral compounds in a perfect chemical handshake. Imagine sodium (Na❺) and chloride (Cl❻) teaming up to form table salt (NaCl) without any extra charge drama. Byju's Ionic Naming Tips
  2. Monatomic Cation Naming - Cations are the life of the positive party, so you simply use the element's name followed by "ion." For example, Na❺ becomes the "sodium ion," making it super clear who's carrying the charge. Byju's Ionic Naming Tips
  3. Monatomic Anion Naming - Anions get a twist on their element name by adding "-ide" at the end. Chloride is born when Cl❻ picks up the "-ide" suffix, turning plain chlorine into a charge-carrying superstar. Byju's Ionic Naming Tips
  4. Transition Metal Charges - Transition metals are the mood rings of the periodic table, capable of multiple oxidation states. Always specify the charge in Roman numerals (e.g., iron(II) vs. iron(III)) so you know exactly which flavor of Fe you're working with. Byju's Ionic Naming Tips
  5. Common Polyatomic Ions - Polyatomic ions are like mini-teams of atoms carrying a single charge, for instance sulfate (SO₄²❻), nitrate (NO₃❻) and ammonium (NH₄❺). Memorize their names and charges to avoid any surprise plot twists in formulas. LibreTexts: Common Polyatomic Ions
  6. Naming with Polyatomic Ions - When a compound includes a polyatomic ion, you still name the cation first, followed by the intact polyatomic name. Sodium nitrate (NaNO₃) is a shining example: "sodium" meets "nitrate" without any remixing of endings. ChemistryTalk: Ionic Naming
  7. Multiple Polyatomic Ions Rule - If your recipe calls for more than one polyatomic ion, wrap it in parentheses before adding the subscript. Calcium hydroxide becomes Ca(OH)2, making it crystal-clear you've got two OH squads. Byju's Ionic Naming Tips
  8. No Prefixes in Ionic Naming - Save prefixes like "di-" or "tri-" for covalent compounds only - ionic compounds stick to charge balance instead. Thus, CaCl₂ is simply calcium chloride, not dicalcium dichloride, keeping things neat and charge-neutral. Byju's Ionic Naming Tips
  9. Formula Writing Practice - Mastering formulas means balancing total positive and negative charges until you hit net neutrality. For instance, Al₂O₃ rocks because two Al³❺ ions perfectly cancel out three O²❻ ions - charge balance achieved! Byju's Ionic Naming Tips
  10. Polyatomic Mnemonics - Mnemonics are your memory's best friend: "Nick the Camel ate a Clam for Supper in Phoenix" helps you recall nitrate (NO₃❻), carbonate (CO₃²❻), chlorate (ClO₃❻), sulfate (SO₄²❻) and phosphate (PO₄³❻). Turn studying into a catchy chorus! Compound Interest: Polyatomic Mnemonics
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