Name: 
 

Practice Test #4 - Formula Writing


Multiple Choice
Identify the letter of the choice that best completes the statement or answers the question.
 

 1. 
Identify the ions present in KHCO3.
a.
KHCO3 is not ionic.
b.
KH+, and CO3-
c.
K+, H+, C4+, and O2-
d.
KH2+ and CO32-
e.
K+ and HCO3-
 

 2. 
Which atom is most likely to form a 1- ion?
a.
I
b.
S
c.
Ag
d.
P
e.
Na
 

 3. 
Which atom is most likely to form a 3+ ion?
a.
Li
b.
Sr
c.
Kr
d.
Fe
e.
P
 

 4. 
For a nonmetal in Group 5A of the periodic table, the most common monatomic ion will have a charge of ____.
a.
3-
b.
2-
c.
1-
d.
1+
e.
2+
 

 5. 
Which of the following formulas is not correct?
a.
Al2(SO4)3
b.
NaClO3
c.
Ba2O3
d.
Mg(NO3)2
e.
KH2PO4
 

 6. 
What is the correct formula for an ionic compound that contains aluminum ions and carbonate ions?
a.
AlCO3
b.
Al(CO3)2
c.
Al(CO3)3
d.
Al2(CO3)3
e.
Al3(CO3)2
 

 7. 
What is the correct formula for an ionic compound that contains magnesium ions and fluoride ions?
a.
Mg2F
b.
MgF
c.
Mg2F2
d.
MgF2
e.
Mg2F3
 

 8. 
Sodium sulfate has the chemical formula Na2SO4. Based on this information, the formula for chromium(III) sulfate is ____.
a.
Cr3(SO4)2
b.
Cr2(SO4)3
c.
Cr(SO4)2
d.
Cr2SO4
e.
CrSO4
 

 9. 
What is the charge on the copper ion in Cu2O?
a.
2-
b.
1-
c.
1+
d.
2+
e.
4+
 

 10. 
What is the correct formula for sodium acetate?
a.
Na2CH3O
b.
NaCH3CO2
c.
NaCH3O
d.
NaCH2O2
e.
NaCHO
 

 11. 
What is the correct formula for barium nitrate?
a.
Ba(NO3)2
b.
BNO2
c.
Ba(NO2)2
d.
BaN
e.
BaNO3
 

 12. 
What is the correct formula for cobalt(III) oxide?
a.
CoO
b.
Co3O
c.
Co3O2
d.
Co2O3
e.
CoO3
 

 13. 
What is the correct formula for copper(II) chloride?
a.
Cu2Cl
b.
CuCl
c.
CuCl2
d.
CuCl3
e.
Cu2Cl2
 

 14. 
What is the correct name for NH4ClO4?
a.
ammonia hydrogen chlorate
b.
ammonia hydrogen perchlorate
c.
ammonium perchlorate
d.
ammonium hypochlorite
e.
ammonium hydrochloric acid
 

 15. 
What is the correct name for AlBr3?
a.
aluminum tribromium
b.
aluminum tribromide
c.
aluminum(III) tribromide
d.
aluminum bromide
e.
bromine aluminide
 

 16. 
What is the correct name for Cr(NO3)2?
a.
chromium(II) nitrate
b.
chromium(II) dinitrate
c.
chromium dinitrate
d.
dinitrochromate
e.
chromium(II) nitride
 

 17. 
What is the formula of sodium bicarbonate, or baking soda?
a.
CH2ONa
b.
NaHCO3
c.
N2CO3
d.
Na2CO3
e.
H2CO3
 

 18. 
What is the correct name for SO2?
a.
sulfur oxide
b.
sulfur dioxide
c.
sulfuric dioxide
d.
sulfuric acid
e.
sulfurous oxide
 

 19. 
What is the correct name for PF5?
a.
phosphorus pentafluoride
b.
phosphorus pentafluorine
c.
phosphorus(V) fluoride
d.
phosphorus fluorate
e.
phosphorus fluorine
 

 20. 
What is a common name for N2O?
a.
nitrous oxide
b.
nitric oxide
c.
nitrogen(I) oxide
d.
hydrazine
e.
ammonia
 



 
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