Practice Quiz On Nomenclature

1. Which of the following shows a prefix used in naming binary molecular compounds with its corresponding number?

Hexa- , 8

Deca- , 7

Octa- , 4

Nona- , 9

memorize the molecular prefixes

Explanation

memorize the molecular prefixes

2. Which of the following is true about the composition of ionic compounds?

They are composed of anions and cations

They are formed from two or more nonmetallic elements

They are composed of anions only

They are composed of cations only

the ionic means the combining of a cation + anion

Explanation

the ionic means the combining of a cation + anion

3. Which of the following is not a cation?

Ca 2+

Sulfate

Iron (III) ion

Mercury (I) ion

cations are positive. sulfate is an anion, look it up on your Table of Polyatomic Ions

Explanation

cations are positive. sulfate is an anion, look it up on your Table of Polyatomic Ions

4. Aluminum is a group 13 metal. Which ion does Al typically form?

Al -3

Al +5

Al +3

Al -5

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.

Explanation

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.

5. What is the correct name for CoCl2

Cobalt (II) chlorate

Cobalt (I) chloride

Cobalt (I) chlorate

Cobalt (II) chloride

the 2 on Cl came from Co and Co has multiple oxidation numbers so it needs Roman Numerals

Explanation

the 2 on Cl came from Co and Co has multiple oxidation numbers so it needs Roman Numerals

6. Which of the following shows correctly an ion pair and ionic compound the two ions form?

Fe +3 , O -2 ; Fe2O3

Cr +3 , I- ; CrI

Sn +4 , N -3 ; Sn4N3

Cu +2 , O -2 ; Cu2O2

If the charge numbers are not equal, then criss-cross them :)

Explanation

If the charge numbers are not equal, then criss-cross them :)

7. Which element, when combined with fluorine, would most likely form an ionic compound?

Phosphorus

Lithium

Carbon

Chlorine

ionic means cation + anion. the only cation in your list is lithium. the others are anions

Explanation

ionic means cation + anion. the only cation in your list is lithium. the others are anions

8. Which of the following shows both the correct formula and correct name of an acid?

HClO2, chloric acid

HNO2, hydronitrous acid

H3PO4, phosphoric acid

HI, iodic acid

anions ending in -ate become -ic

Explanation

anions ending in -ate become -ic

9. How are chemical formulas of binary ionic compounds generally written?

Anion on the left, cation on the right

Roman numeral first, then anion, then cation

Subscripts first, then ions

Cation on the left, anion on the right

Ionic compounds are made of cations and anions. Cations are always written before the anion.

Explanation

Ionic compounds are made of cations and anions. Cations are always written before the anion.

Submit

12. Suppose you encounter a chemical formula with H as the cation. What do you know about this compound immediately?

It is probably an acid

It has a +1 charge

It is an ionic compound

It is a base

most acids start with H

Explanation

most acids start with H

13. Which of the following compounds contains the lead (II) ion?

Pb2O

PbO

Pb2S

PbCl4

Use the chemical name and make the chemical formula.

Explanation

Use the chemical name and make the chemical formula.

14. What is the correct formula for barium chlorate?

BaCl2

Ba(ClO2)2

Ba(ClO3)2

Ba(ClO)2

barium is 2+ and chlorate is ClO3 1-. can't reduce, protect polyatomic ion from the 2 with parenthesis, crisscross, and re-write

Explanation

barium is 2+ and chlorate is ClO3 1-. can't reduce, protect polyatomic ion from the 2 with parenthesis, crisscross, and re-write

15. What is the correct name for Sn3(PO4)2 ?

Tin (V) phosphate

Tin (III) phosphate

Tritin diphosphate

Tin (II )phosphate

Reverse criss cross and check oxidation numbers to make sure they haven't been reduced. Use Roman Numerals because tin has multiple oxidation numbers.

Explanation

Reverse criss cross and check oxidation numbers to make sure they haven't been reduced. Use Roman Numerals because tin has multiple oxidation numbers.

16. In chemical nomenclature, what is the correct name for the compound NaCl?

Sodium carbonate

Sodium chloride

Sodium nitrate

Sodium hydroxide

NaCl is the chemical formula for sodium chloride, which is commonly known as table salt. It consists of sodium (Na) and chlorine (Cl), forming an ionic bond. Sodium carbonate (Na₂CO₃), sodium nitrate (NaNO₃), and sodium hydroxide (NaOH) are different compounds with distinct chemical compositions and properties.

Explanation

NaCl is the chemical formula for sodium chloride, which is commonly known as table salt. It consists of sodium (Na) and chlorine (Cl), forming an ionic bond. Sodium carbonate (Na₂CO₃), sodium nitrate (NaNO₃), and sodium hydroxide (NaOH) are different compounds with distinct chemical compositions and properties.

17. What type of ions have names ending in -ide?

Only metal ions

Only cations

Only gaseous ions

Only anions

your Periodic Table of Ions tells you this

Explanation

your Periodic Table of Ions tells you this

18. Which of the following formulas represents an ionic compound?

CS2

BaI2

PCl3

N2O4

Ionic means it is made of a cation and an anion. Most of the time it is a Metal and Nonmetal.

Explanation

Ionic means it is made of a cation and an anion. Most of the time it is a Metal and Nonmetal.

19. Molecular compounds are usually

Composed of two or more nonmetals

Composed of positive and negative ions

Composed of metal and nonmetal

Composed of two or more transition elements

molecular means molecules. Molecules are made of nonmetals

Explanation

molecular means molecules. Molecules are made of nonmetals

20. Which of the following correctly provides the names and formulas of polyatomic ions?

Nitrite: NO - ; nitrate: NO -2

Carbonate: HCO -3 ; bicarbonate: CO3 -2

Sulfite: S -2 ; sulfate: SO3 -

Chromate: CrO4 -2 ; dichromate: Cr2O7 -2

use your polyatomic ion table

Explanation

use your polyatomic ion table

21. Which of the following correctly represents an ion pair and the ionic compound the ions would form?

Na+, Cl- ; NaCl2

Ca +2, F- ; CaF2

Ba +2, O -2 ; Ba2O2

Pb +4 , O -2 ; Pb2O4

look up oxidation numbers, reduce, criss cross, and rewrite without the 1's

Explanation

look up oxidation numbers, reduce, criss cross, and rewrite without the 1's

22. Which of the following formulas represents a molecular compound?

SO2

ZnO

BeF2

Xe

a molecular compound is made of nonmetals (Groups 15-17)

Explanation

a molecular compound is made of nonmetals (Groups 15-17)

23. Find the homonuclear diatomic molecule that is wrong

H2

I2

F2

B2

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.

Explanation

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.

24. Find the heteronuclear diatomic molecule

I2

H2

NO

Br2

Prefix (hetero-) means different. the prefix (di-) means 2. Molecule means nonmetals.

Explanation

Prefix (hetero-) means different. the prefix (di-) means 2. Molecule means nonmetals.

25. Which set of chemical name and formula for the same compound is correct?

Tin(IV)bromide ; SnBr4

Iron(II)oxide ; Fe2O3

Aluminum fluorate ; AlF3

Potassium chloride ; K2Cl2

use the chemical name and make the chemical formula

Explanation

use the chemical name and make the chemical formula

26. What is the formula for phosphoric acid?

Recognize the oxyacid. the suffix (-ic) was (-ate), phosphate polatomic ion. Criss cross hydrogen with phosphate.

Explanation

Recognize the oxyacid. the suffix (-ic) was (-ate), phosphate polatomic ion. Criss cross hydrogen with phosphate.

Submit

27. What is the formula for sulfurous acid?

Recognize the oxyacid. the suffix (-ous) was (-ite), sulfite polatomic ion. Criss cross sulfite with hydrogen

Explanation

Recognize the oxyacid. the suffix (-ous) was (-ite), sulfite polatomic ion. Criss cross sulfite with hydrogen

Submit

28. Which set of the chemical name and chemical formula for the compound is correct?

Iron (III) phosphate, FePO4

Ammonium sulfite, (NH4)2S

Lithium carbonate, LiCO3

Magnesium dichromate, MgCrO4

Use the chemical names and create the chemical formula

Explanation

Use the chemical names and create the chemical formula

29. What is the name of H2SO3 ?

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)

Explanation

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)

Submit

31. What is the correct formula for potassium sulfite?

Recognize the polyatomic ion by the (-ite) suffix. Reduce oxidation number and criss cross. Don't forget the parenthesis rule.

Explanation

Recognize the polyatomic ion by the (-ite) suffix. Reduce oxidation number and criss cross. Don't forget the parenthesis rule.

Submit

33. What is the correct name for the chemical symbol N -3?

the charge makes it an ion. You probably used the Periodic Table of Ions to answer most of these questions.

Explanation

the charge makes it an ion. You probably used the Periodic Table of Ions to answer most of these questions.

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