Practice Quiz On Nomenclature
Needed SKILLS: Identifying types of chemical compounds, applying the rules to name or write the correct name or formula.
- 1.
Which of the following formulas represents a molecular compound?
- A.
SO2
- B.
ZnO
- C.
BeF2
- D.
Xe
Correct Answer
A. SO2Explanation
a molecular compound is made of nonmetals (Groups 15-17)Rate this question:
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- 2.
Which of the following shows both the correct formula and correct name of an acid?
- A.
HClO2, chloric acid
- B.
HNO2, hydronitrous acid
- C.
H3PO4, phosphoric acid
- D.
HI, iodic acid
Correct Answer
C. H3PO4, phosphoric acidExplanation
anions ending in -ate become -icRate this question:
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- 3.
Which of the following shows a prefix used in naming binary molecular compounds with its corresponding number?
- A.
Hexa- , 8
- B.
Deca- , 7
- C.
Octa- , 4
- D.
Nona- , 9
Correct Answer
D. Nona- , 9Explanation
memorize the molecular prefixesRate this question:
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- 4.
Suppose you encounter a chemical formula with H as the cation. What do you know about this compound immediately?
- A.
It is probably an acid
- B.
It has a +1 charge
- C.
It is an ionic compound
- D.
It is a base
Correct Answer
A. It is probably an acidExplanation
most acids start with HRate this question:
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- 5.
Which of the following is not a cation?
- A.
Ca 2+
- B.
Sulfate
- C.
Iron (III) ion
- D.
Mercury (I) ion
Correct Answer
B. SulfateExplanation
cations are positive. sulfate is an anion, look it up on your Table of Polyatomic IonsRate this question:
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- 6.
Which set of the chemical name and chemical formula for the compound is correct?
- A.
Iron (III) phosphate, FePO4
- B.
Ammonium sulfite, (NH4)2S
- C.
Lithium carbonate, LiCO3
- D.
Magnesium dichromate, MgCrO4
Correct Answer
A. Iron (III) phosphate, FePO4Explanation
Use the chemical names and create the chemical formulaRate this question:
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- 7.
What is the correct name for CoCl2
- A.
Cobalt (II) chlorate
- B.
Cobalt (I) chloride
- C.
Cobalt (I) chlorate
- D.
Cobalt (II) chloride
Correct Answer
D. Cobalt (II) chlorideExplanation
the 2 on Cl came from Co and Co has multiple oxidation numbers so it needs Roman NumeralsRate this question:
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- 8.
When naming a transition metal ion that can have more than one common ionic charge, the numerical value of the charge is indicated by a
- A.
Superscript after the name
- B.
Roman Numeral following the anion
- C.
Prefix
- D.
Roman Numerals following the cation
Correct Answer
D. Roman Numerals following the cationExplanation
Remember that metals with multiple oxidation numbers need Roman NumeralsRate this question:
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- 9.
Which of the following correctly represents an ion pair and the ionic compound the ions would form?
- A.
Na+, Cl- ; NaCl2
- B.
Ca +2, F- ; CaF2
- C.
Ba +2, O -2 ; Ba2O2
- D.
Pb +4 , O -2 ; Pb2O4
Correct Answer
B. Ca +2, F- ; CaF2Explanation
look up oxidation numbers, reduce, criss cross, and rewrite without the 1'sRate this question:
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- 10.
What type of ions have names ending in -ide?
- A.
Only metal ions
- B.
Only cations
- C.
Only gaseous ions
- D.
Only anions
Correct Answer
D. Only anionsExplanation
your Periodic Table of Ions tells you thisRate this question:
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- 11.
Which element, when combined with fluorine, would most likely form an ionic compound?
- A.
Phosphorus
- B.
Lithium
- C.
Carbon
- D.
Chlorine
Correct Answer
B. LithiumExplanation
ionic means cation + anion. the only cation in your list is lithium. the others are anionsRate this question:
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- 12.
Which of the following compounds contains the lead (II) ion?
- A.
Pb2O
- B.
PbO
- C.
Pb2S
- D.
PbCl4
Correct Answer
B. PbOExplanation
Use the chemical name and make the chemical formula.Rate this question:
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- 13.
Which of the following is true about the composition of ionic compounds?
- A.
They are composed of anions and cations
- B.
They are formed from two or more nonmetallic elements
- C.
They are composed of anions only
- D.
They are composed of cations only
Correct Answer
A. They are composed of anions and cationsExplanation
the ionic means the combining of a cation + anionRate this question:
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- 14.
What is the correct formula for barium chlorate?
- A.
BaCl2
- B.
Ba(ClO2)2
- C.
Ba(ClO3)2
- D.
Ba(ClO)2
Correct Answer
C. Ba(ClO3)2Explanation
barium is 2+ and chlorate is ClO3 1-. can't reduce, protect polyatomic ion from the 2 with parenthesis, crisscross, and re-writeRate this question:
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- 15.
Which of the following shows correctly an ion pair and ionic compound the two ions form?
- A.
Fe +3 , O -2 ; Fe2O3
- B.
Cr +3 , I- ; CrI
- C.
Sn +4 , N -3 ; Sn4N3
- D.
Cu +2 , O -2 ; Cu2O2
Correct Answer
A. Fe +3 , O -2 ; Fe2O3Explanation
If the charge numbers are not equal, then criss-cross them :)Rate this question:
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- 16.
Which set of chemical name and formula for the same compound is correct?
- A.
Tin(IV)bromide ; SnBr4
- B.
Iron(II)oxide ; Fe2O3
- C.
Aluminum fluorate ; AlF3
- D.
Potassium chloride ; K2Cl2
Correct Answer
A. Tin(IV)bromide ; SnBr4Explanation
use the chemical name and make the chemical formulaRate this question:
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- 17.
What is the correct name for Sn3(PO4)2 ?
- A.
Tin (V) phosphate
- B.
Tin (III) phosphate
- C.
Tritin diphosphate
- D.
Tin (II )phosphate
Correct Answer
D. Tin (II )phosphateExplanation
Reverse criss cross and check oxidation numbers to make sure they haven't been reduced. Use Roman Numerals because tin has multiple oxidation numbers.Rate this question:
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- 18.
Aluminum is a group 13 metal. Which ion does Al typically form?
- A.
Al -3
- B.
Al +5
- C.
Al +3
- D.
Al -5
Correct Answer
C. Al +3Explanation
Aluminum is a group 13 metal, which means it has three valence electrons. When aluminum forms an ion, it tends to lose these three electrons to achieve a stable electron configuration. Since it loses three electrons, it forms a positive ion with a charge of +3.Rate this question:
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- 19.
Which of the following formulas represents an ionic compound?
- A.
CS2
- B.
BaI2
- C.
PCl3
- D.
N2O4
Correct Answer
B. BaI2Explanation
Ionic means it is made of a cation and an anion. Most of the time it is a Metal and Nonmetal.Rate this question:
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- 20.
Molecular compounds are usually
- A.
Composed of two or more nonmetals
- B.
Composed of positive and negative ions
- C.
Composed of metal and nonmetal
- D.
Composed of two or more transition elements
Correct Answer
A. Composed of two or more nonmetalsExplanation
molecular means molecules. Molecules are made of nonmetalsRate this question:
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- 21.
How are chemical formulas of binary ionic compounds generally written?
- A.
Anion on the left, cation on the right
- B.
Roman numeral first, then anion, then cation
- C.
Subscripts first, then ions
- D.
Cation on the left, anion on the right
Correct Answer
D. Cation on the left, anion on the rightExplanation
Ionic compounds are made of cations and anions. Cations are always written before the anion.Rate this question:
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- 22.
Which of the following correctly provides the names and formulas of polyatomic ions?
- A.
Nitrite: NO - ; nitrate: NO -2
- B.
Carbonate: HCO -3 ; bicarbonate: CO3 -2
- C.
Sulfite: S -2 ; sulfate: SO3 -
- D.
Chromate: CrO4 -2 ; dichromate: Cr2O7 -2
Correct Answer
D. Chromate: CrO4 -2 ; dichromate: Cr2O7 -2Explanation
use your polyatomic ion tableRate this question:
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- 23.
What is the correct name for the chemical symbol N -3?
Correct Answer
nitride ionExplanation
the charge makes it an ion. You probably used the Periodic Table of Ions to answer most of these questions.Rate this question:
- 24.
What is the formula for sulfurous acid?
Correct Answer
H2SO3Explanation
Recognize the oxyacid. the suffix (-ous) was (-ite), sulfite polatomic ion. Criss cross sulfite with hydrogenRate this question:
- 25.
What is the formula for hydrosulfuric acid?
Correct Answer
H2SExplanation
Recognize the binary acid by the prefix (hydro-), the suffix (-ic), and the work acidRate this question:
- 26.
What is the correct formula for potassium sulfite?
Correct Answer
K2SO3Explanation
Recognize the polyatomic ion by the (-ite) suffix. Reduce oxidation number and criss cross. Don't forget the parenthesis rule.Rate this question:
- 27.
Write the correct name for N2O5 ?
Correct Answer
dinitrogen pentoxideExplanation
Recognize the binary covalent compound by only having nonmetals in the chemical formula. Use pre-fixesRate this question:
- 28.
Write the correct formula for sulfur hexafluoride.
Correct Answer
SF6Explanation
The correct formula for sulfur hexafluoride is SF6.Rate this question:
- 29.
What is the name of H2SO3 ?
Correct Answer
sulfurous acidExplanation
Recognize the oxyacid by the first elemet being hydrogen, 3 or more elements with one of them being oxygen. Change suffix from (-ite) to (-ous)Rate this question:
- 30.
What is the formula for phosphoric acid?
Correct Answer
H3PO4Explanation
Recognize the oxyacid. the suffix (-ic) was (-ate), phosphate polatomic ion. Criss cross hydrogen with phosphate.Rate this question:
- 31.
Write the chemical formula for a homonuclear diatomic molecule using the element iodine
Correct Answer
I2Explanation
Make sure you use the capital "eye" and not a lowercase LRate this question:
- 32.
Find the heteronuclear diatomic molecule
- A.
I2
- B.
H2
- C.
NO
- D.
Br2
Correct Answer
C. NOExplanation
Prefix (hetero-) means different. the prefix (di-) means 2. Molecule means nonmetals.Rate this question:
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- 33.
Find the homonuclear diatomic molecule that is wrong
- A.
H2
- B.
I2
- C.
F2
- D.
B2
Correct Answer
D. B2Explanation
Prefix (homo-) means the same. the prefix (di-) means 2. Molecule means nonmetals. There are only 7 of these. Start @ 7. Make a 7. There are 7.Rate this question:
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Current Version
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Mar 22, 2023Quiz Edited by
ProProfs Editorial Team -
Dec 13, 2014Quiz Created by
Kyle Pearson
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