Compound Nomenclature Pre-test

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 the correct name for N2O5 ?

Nitrous oxide

Nitrogen dioxide

Dinitrogen pentoxide

Nitrate oxide

3. 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

4. Aluminum is a group 3 metal. Which ion does Al typically form?

Al3-

Al5+

Al3+

Al5-

5. Which of the following is not a cation?

Ca2+

Sulfate

Iron (III) ion

Mercury (I) ion

cations are + charged ions. sulfate is an anion

Explanation

cations are + charged ions. sulfate is an anion

6. Select the correct formula for sulfur hexafluoride.

F6SO3

F6S2

SF6

S2F6

prefixes are equal to subscripts in covalent (molecular) compounds

Explanation

prefixes are equal to subscripts in covalent (molecular) compounds

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

Phosphorus

Lithium

Carbon

Chlorine

8. What is the correct formula for potassium sulfite?

K2SO3

K2SO4

KHSO4

KHSO3

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

Fe3+ , O2- ; Fe2O3

Cr3+ , I- ; CrI

Sn4+ , N3- ; Sn4N3

Cu2+ , O2- ; Cu2O2

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

Explanation

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

10. 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

Superscript after the name

Suffix

Prefix

Roman numeral following the name

11. 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

12. What is the correct formula for barium chlorate?

BaCl2

Ba(ClO2)2

Ba(ClO3)2

Ba(ClO)2

13. What is the correct name for CoCl2

Cobalt (II) chlorate

Cobalt (I) chloride

Cobalt (I) chlorate

Cobalt (II) chloride

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

It is an acid

It has a +1 charge

It is an ionic compound

It is a base

all acids start with H

Explanation

all acids start with H

15. 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

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

Tin(IV)phosphate

Tin(III)phosphate

Tritin diphosphate

Tin(II)phosphate

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

CS2

BaI2

PCl3

N2O4

18. 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

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

Na+, Cl- ; NaCl2

Ca2+, F- ; CaF2

Ba2+, O2- ; Ba2O2

Pb4+ , O2- ; Pb2O4

20. 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

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

Only metal ions

Only cations

Only gaseous ions

Only anions

22. What is the formula for sulfurous acid?

H2SO3

H2SO4

H2SO2

H2S

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

Pb2O

PbO

Pb2S

PbCl4

24. What is the formula for phosphoric acid?

H3PO4

H2PO3

HPO4

HPO2

phosphate has a -3 charge, so the 3 is crossed.

Explanation

phosphate has a -3 charge, so the 3 is crossed.

25. 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)

26. What is the name of H2SO3 ?

Sulfuric acid

Sulfurous acid

Hydrosulfuric acid

Hyposulfuric acid

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

Nitrite: NO- ; nitrate: NO2-

Carbonate: HCO3- ; bicarbonate: CO32-

Sulfite: S2- ; sulfate: SO3-

Chromate: CrO42- ; dichromate: Cr2O72-

use your orange ion sheet

Explanation

use your orange ion sheet

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 orange ion sheet

Explanation

use orange ion sheet

29. What is the formula for hydrosulfuric acid?

H2S2

H2SO2

HSO2

H2S

30. What is the correct name for the N3- ion?

Nitride ion

Nitrite ion

Nitrate ion

Nitrogen ion

Compound Nomenclature Pre-test

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

2.

What first name or nickname would you like us to use?

2. Which of the following is the correct name for N2O5 ?

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

4. Aluminum is a group 3 metal. Which ion does Al typically form?

5. Which of the following is not a cation?

6. Select the correct formula for sulfur hexafluoride.

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

8. What is the correct formula for potassium sulfite?

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

10. 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

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

12. What is the correct formula for barium chlorate?

13. What is the correct name for CoCl2

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

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

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

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

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

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

20. Molecular compounds are usually

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

22. What is the formula for sulfurous acid?

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

24. What is the formula for phosphoric acid?

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

26. What is the name of H2SO3 ?

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

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

29. What is the formula for hydrosulfuric acid?

30. What is the correct name for the N3- ion?