Pre AP Chemistry Unit 7 HW Packet
Name ______________________________________
WKS 7.1 – Beginning Naming & Formula Writing (2 pages)
Name the following ionic compounds. Be sure to check for Roman Numerals!
Na3P
MgBr2
Ag2Se
AlCl3
Ca3P2
Ba3N2
Li2O
ZnF2
K2 S
SrI2
(NH4)2S
Ca3(PO3)2
Li2CO3
Al(C2H3O2)3
KCN
AgNO3
Sb(NO3)5
NiS
Cu(NO3)2
FeCl2
Au(CN)3
Pb(SO4)2
Write the correct formulas for each of the ionic compounds.
silver iodide
lithium sulfide
magnesium nitride
cadmium bromide
zinc chloride
barium phosphide
aluminum fluoride
strontium oxide
potassium permanganate
strontium sulfate
cesium bromate
magnesium cyanide
aluminum hypoiodite
cadmium periodate
tin (IV) chlorate
bismuth (III) carbonate
copper (I) sulfide
iron (III) oxide
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Page 1 of 9
Pre AP Chemistry Unit 7 HW Packet
Name ______________________________________
WKS 7.1 – Beginning Naming & Formula Writing (continued)
Write the correct formulas for each of the covalent compounds.
nitrogen triiodide
krypton hexafluoride
iodine pentafluoride
dinitrogen tetroxide
diiodine pentoxide
xenon trioxide
disufur heptoxide
sulfur trioxide
arsenic pentafluoride
dinitrogen pentoxide
pentane
cyclooctane
cyclopropane
heptane
Name the following acids, or write the correct formula.
H2SO4 (aq)
HClO4 (aq)
H2CO3 (aq)
H3PO3 (aq)
HMnO4 (aq)
HI (aq)
HNO2 (aq)
HF (aq)
sulfurous acid
nitric acid
hydrobromic acid
phosphoric acid
hypobromous acid
hydrosulfuric acid
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Page 2 of 9
Pre AP Chemistry Unit 7 HW Packet
Name ______________________________________
WKS 7.2 – Formula Writing (1 page)
1.
CLASSIFY each of the following substances as:
 Ionic
 Acid
 Inorganic Covalent
 Organic Covalent
2. Write a CORRECT chemical formula for each of the following substances.
SUBSTANCE NAME
Cadmium sulfide
CLASSIFICATION
FORMULA
Lead (IV) permanganate
Phosphoric Acid
Sulfur trioxide
Tetraphosphorus decoxide
Sodium carbonate
Cyclobutane
Magnesium chloride hexahydrate
Cesium bicarbonate
Aluminum sulfide
Decane
Sulfur tetrafluoride
Carbon disulfide
Ammonium phosphite
Dinitrogen tetrafluoride
Dichlorine heptaoxide
Hydrosulfuric acid
Barium hyposulfite
Diarsenic trioxide
Calcium sulfate dihydrate
Tin (II) nitride
Zinc phosphate
Sulfurous acid
Perchloric acid
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Page 3 of 9
Pre AP Chemistry Unit 7 HW Packet
Name ______________________________________
WKS 7.3 – Formula Naming (1 page)
1. CLASSIFY each of the following substances as:
 Ionic
 Acid
 Inorganic Covalent
 Organic Covalent
2. Write a CORRECT chemical formula for each of the following substances.
SUBSTANCE FORMULA
SrS
CLASSIFICATION
NAME
SeO2
H2SO3 (aq)
C7H16
Cu3P2
Cd(NO2)2
C3H8
ICl
H2SO4 (aq)
HCl (aq)
MnO2
C9H18
NiCl2•6H2O
Fe(C2H3O2)3
SnCl4•5H2O
PH3
P2Se3
Hg(IO2)2
IF7
Cu3P
Sn(CN)4
CoSO4•7H2O
C2H6
HBrO4 (aq)
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Page 4 of 9
Pre AP Chemistry Unit 7 HW Packet
Name ______________________________________
WKS 7.4 – Formula Naming, Round Two (1 page)
1. (NH4)2CO3
2. Na2CO3
3. Sn(HCO3)4
4. Hg(ClO)2
5. Pb(ClO2)2
6. HNO3 (aq)
7. HCl (aq)
8. H3PO4 (aq)
9. P2Br4
10. Fe(NO2)2
11. SbCl3
12. Ca(ClO4)2
13. HC2H3O2 (aq)
14. Al2(SO4)3
15. H2SO4 (aq)
16. Fe2O3
17. CrCl3
18. Cu2SO2
19. PF5
20. IF5
21. Ag2O
22. KClO4
23. Cl2O5
24. Pb3(PO4)4
25. CoF3
26. Ba(OH)2
27. B2Si
28. N2H4
29. P4S5
30. NaHCO3
31. Sr3(PO4)2
32. As4O10
33. ClF3
34. N2S
35. HgF2
36. LiMnO4
37. Si2Br6
38. Bi2(SO3)5
39. Pb(ClO3)2 • 3 H2O
40. SeF6
41. SBr2
42. Cl2O
43. P2O5
44. MgSO4 • 9 H2O
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Page 5 of 9
Pre AP Chemistry Unit 7 HW Packet
Name ______________________________________
WKS 7.5 – Formula Writing, Round Two (1 page)
1. Selenium trioxide
2. Iron (II) hypobromite
3. Copper (I) sulfate
4. Hexabromine monosilicide
5. Nitric Acid
6. Boron trihydride
7. Iodine pentabromide
8. Dichlorine heptaoxide
9. Nickel (III) iodide
10. Antimony (III) chloride
11. Ammonium phosphate
12. Hypoiodous Acid
13. Silicon dioxide
14. Carbon tetrachloride
15. Nickel (III) nitrate
16. Zinc bicarbonate
17. Cyclohexane
18. Dinitrogen monoxide
19. Dinitrogen tetroxide
20. Copper (II) sulfate
pentahydrate
21. Pentane
22. Chromium (III) sulfate
23. Carbonic Acid
24. Hydrophosphoric Acid
25. Perchloric Acid
26. Silver cyanide
27. Magnesium hydroxide
28. Ammonium Sulfide
29. Ammonium chlorate
30. Potassium oxide
31. Iron (III) sulfide
32. Diphosphorous pentoxide
33. Octane
34. Hydrobromic Acid
35. Aluminum sulfite
36. Cyclononane
37. Magnesium sulfate
trihydrate
38. Bismuth (III) bicarbonate
39. Copper (II) carbonate
40. Fluorine tribromide
41. Iodous Acid
42. Hyposulfurous acid
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Page 6 of 9
Pre AP Chemistry Unit 7 HW Packet
Name ______________________________________
WKS 7.6 – Correcting Formulas (1 page)
Each of these formulas or names have something wrong with them – charges not balanced, parentheses not used
correctly, endings not changed, two cations or two anions together, elements in wrong order, impossible
charges, and more. State what is incorrect about each of the following.
1. NaPO4 ___________________________________________________________________________
2. MgOH2 __________________________________________________________________________
3. HSO4 (aq) ________________________________________________________________________
4. NH4K ___________________________________________________________________________
5. Cl2Mg ___________________________________________________________________________
6. Cu2S_____________________________________________________________________________
7. C2H3O2H (aq) ______________________________________________________________________
8. NH4Cl4 ___________________________________________________________________________
9. MgClO2 ___________________________________________________________________________
10. MgIO42 ____________________________________________________________________________
11. LiS _______________________________________________________________________________
12. Calcium chlorine _____________________________________________________________________
13. Zinc (II) bromide _____________________________________________________________________
14. Copper carbonate _____________________________________________________________________
15. Sulfur cyanide _______________________________________________________________________
16. Sulfic Acid __________________________________________________________________________
17. Magnesium calcium ___________________________________________________________________
18. Iron (3) chloride ______________________________________________________________________
19. Tin (III) nitrate _______________________________________________________________________
20. Dinitrogen chloride ___________________________________________________________________
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Page 7 of 9
Pre AP Chemistry Unit 7 HW Packet
Name ______________________________________
WKS 7.7 – Writing Formulas, Counting Atoms (1 page)
Write the formula for each of the following, and then answer the calculation for each.
QUESTION
CHEMICAL FORMULA
ANSWER
1. How many total atoms are there in Calcium hydroxide?
2. How many total atoms are there in Tin (IV) carbonate?
3. How many atoms of oxygen are there in Magnesium
bicarbonate?
4. How many total atoms are there in Acetic acid?
5. How many atoms of nitrogen are there in Ammonium
nitride?
6. How many total atoms are there in Aluminum
permanganate?
7. How many atoms of oxygen are there in Iron (III)
perbromate?
8. How many atoms of sulfur are there in Lead (II)
sulfate?
9. How many total atoms are there in Phosphoric acid?
10. How many total atoms are there in Diphosphorus
trioxide?
11. How many atoms of hydrogen are there in Ammonium
acetate?
12. How many atoms of cesium are there in Cesium
phosphate?
13. How many total atoms are there in Copper (II) sulfite?
14. How many atoms of tin are there in Tin (IV)
phosphate?
15. How many atoms of carbon are there in Barium
Carbonate?
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Page 8 of 9
Pre AP Chemistry Unit 7 HW Packet
Name ______________________________________
16. How many atoms of oxygen are there in Aluminum
sulfite?
17. How many atoms of oxygen are there in Barium
chlorate hexahydrate?
18. How many total atoms are there in Dinitrogen
pentoxide?
19. How many total atoms are there in Copper (II) sulfate
pentahydrate?
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Page 9 of 9
Pre AP Chemistry Unit 7 HW Packet
Name ______________________________________
WKS 7.8 – Balancing Reactions (1 page)
Balance the following reactions, putting coefficient numbers in the spaces provided. If no coefficient is
needed, simply leave the space blank – there is no need to place a “1” as a coefficient.
1.
____H3PO4 + ____HCl  ____PCl5 + ____H2O
2.
____CaC2 + ____H2O  ____C2H2 + ____Ca(OH)2
3.
____Fe(OH)3  ____Fe2O3
4.
____Ca(ClO3)2  ____CaCl2 + ____O2
5.
____C2H5OH + ____O2  ____CO + ____H2O
6.
____BaO + ____H2O  ____Ba(OH)2
7.
____Ca + ____AlCl3  ____CaCl2 + ____Al
8.
____NH4NO3  ____N2O + ____H2O
9.
____Au2O3  ____Au + ____O2
10.
____H3PO3  ____H3PO4 + ____PH3
11.
____C4H10 + ____O2  ____CO2 + ____H2O
12.
____Fe2O3 + ____C  ____CO + ____Fe
13.
____Fe3O4 + ____H2  ____Fe + ____H2O
14.
____C6H6 + ____O2  ____CO2 + ____H2O
15.
____C2H5OH + ____O2  ____CO2 + ____H2O
+
____H2O
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Page 10 of 9