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Quizzes > Quizzes for Business > Education

Master the Chemical Nomenclature Assessment Quiz

Enhance Your IUPAC Naming and Formula Skills

Difficulty: Moderate
Questions: 20
Learning OutcomesStudy Material
Colorful paper art depicting elements for a Chemical Nomenclature Assessment Quiz.

Ready to explore chemical nomenclature in a fun, interactive way? This chemical nomenclature quiz offers 15 multiple-choice questions to challenge your mastery of IUPAC naming and formula writing. Ideal for students or educators seeking a targeted assessment, it delivers immediate feedback and clear explanations to deepen understanding. Feel free to modify every question in our editor for personalised practice, just like in the Basic Knowledge Assessment Quiz or after brushing up with the Vocabulary Assessment Quiz. Browse more quizzes to keep sharpening your skills.

What is the IUPAC name for NaCl?
Natrium chloride
Sodium chloride
Sodium monochloride
Sodium chlorate
NaCl consists of sodium cations and chloride anions, so the correct IUPAC name is sodium chloride. The term 'monochloride' is unnecessary when default valences are used. 'Chlorate' refers to ClO₃❻.
What is the chemical formula for calcium carbonate?
CaC2O3
CaCO3
Ca(OH)2
CaCO2
Calcium carbonate is composed of Ca²❺ ions and the CO₃²❻ polyatomic ion, giving the formula CaCO₃. Other formulas either omit oxygen or represent different compounds. Ca(OH)₂ is calcium hydroxide.
What is the IUPAC name for CO2?
Carbon monoxide
Carbon peroxide
Monocarbon dioxide
Carbon dioxide
CO₂ has one carbon atom and two oxygen atoms, so according to suffix rules it is named carbon dioxide. Carbon monoxide refers to CO. 'Carbon peroxide' and 'monocarbon dioxide' are incorrect.
What is the chemical formula for magnesium oxide?
Mg2O3
MgO
Mg2O
MgO2
Magnesium forms a +2 cation and oxide is -2, so one Mg²❺ balances one O²❻ giving MgO. Other ratios do not satisfy charge neutrality.
What is the IUPAC name for P2O5?
Phosphorus pentoxide
Phosphorus oxide
Diphosphorus pentoxide
Diphosphorus oxide
P₂O₅ contains two phosphorus atoms and five oxygen atoms, so the correct molecular name is diphosphorus pentoxide. Simply 'phosphorus pentoxide' is less systematic. 'Phosphorus oxide' and 'diphosphorus oxide' are incomplete.
What is the chemical formula for iron(III) chloride?
Fe3Cl2
FeCl3
FeCl2
Fe2Cl3
Iron(III) indicates Fe³❺ combining with three Cl❻ anions to form FeCl₃. FeCl₂ would be iron(II) chloride. The other ratios do not reflect correct charges.
What is the IUPAC name for Fe2O3?
Iron(III) oxide
Iron(II) oxide
Diiron trioxide
Iron oxide
Fe₂O₃ has iron in the +3 oxidation state, so it is named iron(III) oxide. Iron(II) oxide is FeO. 'Diiron trioxide' is outdated, and 'iron oxide' is ambiguous.
What is the chemical formula for ammonium sulfate?
(NH4)2SO4
(NH4)SO4
NH4SO4
NH2SO4
Ammonium is NH₄❺ and sulfate is SO₄²❻, so two ammonium ions balance one sulfate yielding (NH₄)₂SO₄. Other formulas either omit the proper subscripts or misrepresent the ions.
What is the IUPAC name for CH3COOH?
Acetyl hydroxide
Acetic acid
Ethanoic acid
Methylformic acid
The systematic IUPAC name for CH₃COOH is ethanoic acid, indicating a two-carbon carboxylic acid. 'Acetic acid' is a common name but not IUPAC. The other options are incorrect derivatives.
What is the IUPAC name for CH3CH2OH?
Methanol
Ethyl alcohol
Ethanol
Propanol
CH₃CH₂OH is a two”carbon alcohol named ethanol under IUPAC rules. 'Ethyl alcohol' is a common name. Methanol has one carbon and propanol has three.
What is the IUPAC name for C2H4?
Ethadiene
Ethene
Ethyne
Ethane
C₂H₄ contains a carbon - carbon double bond, so it is named ethene. Ethane has only single bonds, ethyne has a triple bond, and 'ethadiene' is not systematic.
What is the chemical formula for copper(I) oxide?
Cu2O3
CuO2
Cu2O
CuO
Copper(I) indicates Cu❺ ions, requiring two Cu❺ to balance one O²❻, giving Cu₂O. CuO is copper(II) oxide. The others do not satisfy charge balance.
What is the IUPAC name for NaHCO3?
Sodium bicarbonate
Sodium hydrogen carbonate
Sodium hydrocarbonate
Sodium carbonate
NaHCO₃ is systematically named sodium hydrogen carbonate. 'Sodium bicarbonate' is a common name but not strictly IUPAC. Sodium carbonate is Na₂CO₃.
What is the IUPAC name for the sulfate ion, SO4^2-?
Hyposulfite
Sulfite
Sulfurate
Sulfate
SO₄²❻ is named sulfate, indicating the −2 ion of sulfur in +6 oxidation state. Sulfite is SO₃²❻, and the other terms are not correct anions.
What is the IUPAC name for K2Cr2O7?
Potassium chromate(VI)
Potassium dichromate
Potassium chromate
Dipotasium chromate
K₂Cr₂O₇ contains two CrO₄²❻ units joined, so it is named potassium dichromate. 'Potassium chromate' refers to K₂CrO₄. Oxidation states are +6 for chromium but not specified as chromate(VI).
What is the IUPAC name for the complex ion [Fe(CN)6]4-?
Hexacyanoferrate(III)
Hexacyanoferrous ion
Ferracyanide tetramer
Hexacyanoferrate(II)
[Fe(CN)₆]❴❻ has iron in +2 state and six cyanide ligands, so it is hexacyanoferrate(II). The (III) oxidation is wrong, and the other names are non-systematic or incomplete.
What is the IUPAC name for CH3COOCH3?
Methyl acetate
Ethyl methanoate
Dimethyl carbonate
Methyl ethanoate
CH₃COOCH₃ is an ester of methanol and acetic acid, so the alkyl (methyl) comes first and then the acid root (ethanoate), giving methyl ethanoate. 'Methyl acetate' is common but not systematic.
What is the IUPAC name for BrCH2CH2OH?
Bromoethanol
2-Bromoethanol
1-Bromoethanol
Ethyl bromide
With two carbons, the OH group is on carbon 1, so the bromo substituent is on carbon 2, yielding 2-bromoethanol. '1-Bromoethanol' misplaces the substituent, and 'ethyl bromide' is an alkyl halide without an OH.
What is the IUPAC name for HOCH2CH2COOH?
3-Hydroxypropanoic acid
Hydroxypropionic acid
2-Hydroxypropanoic acid
2-Hydroxyethanoic acid
The parent chain is propanoic acid, numbered so COOH is C1, making the OH on C3, resulting in 3-hydroxypropanoic acid. The other positions or parent names are incorrect.
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Learning Outcomes

  1. Identify correct IUPAC names for inorganic compounds
  2. Apply naming rules to organic molecules
  3. Demonstrate writing chemical formulas from names
  4. Analyse complex nomenclature for polyatomic ions
  5. Master systematic naming of functional groups
  6. Evaluate alternative naming conventions and synonyms

Cheat Sheet

  1. Master the IUPAC rules for naming inorganic compounds - Unlock the secret code chemists use worldwide by learning to name cations, anions, and their combinations with ease. Think of it as giving each compound its own scientific nickname! IUPAC Inorganic Nomenclature Guide
  2. Apply the IUPAC nomenclature to organic molecules - Dive into the fun world of hydrocarbons by finding the longest carbon chain, assigning locants to substituents, and choosing suffixes for functional groups. Imagine you're a detective spotting clues in CH₃CH₂OH and naming it ethanol! IUPAC Organic Nomenclature Guide
  3. Practice writing chemical formulas from names - Sharpen your translation skills by converting names like sodium sulfate into Na₂SO₄. This hands-on exercise cements your understanding of composition and stoichiometry in a flash. IUPAC Inorganic Nomenclature Guide
  4. Analyze complex nomenclature involving polyatomic ions - Become a polyatomic pro by identifying ions such as NH₄❺ and SO₄²❻ in compounds like NH₄NO₃. Mastering these building blocks is like collecting badges on your chemistry adventure! IUPAC Inorganic Nomenclature Guide
  5. Understand the systematic naming of functional groups - Learn the hierarchy that decides whether a hydroxyl or carboxyl group steals the spotlight in a compound's name. It's like awarding the best actor in a blockbuster molecule! IUPAC Organic Nomenclature Guide
  6. Evaluate alternative naming conventions and synonyms - Don't get tricked by common names like acetic acid versus ethanoic acid; know both to impress your peers and ace exams. Familiarity with synonyms keeps you fluent in all chemistry dialects. IUPAC Organic Nomenclature Guide
  7. Learn the Cahn - Ingold - Prelog priority rules - Assign priorities around chiral centers and confidently determine R/S configurations, just like solving a stereochemical puzzle. These rules are your key to unlocking molecular geometry secrets! Cahn - Ingold - Prelog Priority Rules
  8. Understand E - Z notation for double bonds - Discover whether substituents are 'entgegen' (opposite) or 'zusammen' (together) around a double bond in compounds like but-2-ene. It's a fun way to tell geometric twins apart! E - Z Notation Explained
  9. Practice naming compounds with multiple functional groups - Tackle molecules that boast both alcohols and ketones by giving the highest”priority group the headline suffix and the rest as prefixes. It's chemistry multitasking at its best! IUPAC Organic Nomenclature Guide
  10. Review common polyatomic ions and their charges - Memorize your all”stars like nitrate (NO₃❻), sulfate (SO₄²❻), and phosphate (PO₄³❻) so you can name and balance ionic compounds in a snap. Charge up your memory with these essentials! IUPAC Inorganic Nomenclature Guide
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