Chemistry
Pre Test CH 7
Name _________________________
Period _________
Date ____________
MULTIPLE CHOICE
1. Name the acid with the formula H2SO4.
A. sulfuric
B. sulfurous
C. hydrosulfur D. dihydrous
2. What is the oxidation number of Zn+2
A. -2
B. +2
C. 0
D. can’t be determined
3. A chemical formula includes the symbols of the elements in the compound and
subscripts that indicate
A. the number of moles of each element
B. how many atoms or ions of each element
C. the formula mass
D. The charges on the element or ions
4. Name the compound CF4 using prefixes.
A. calcium fluoride
B. carbon fluoride
C. carbon tetrafluoride
D. monocarbon quadrafluoride
5. All of the following are polyatomic ions EXCEPT the
A. hydrogen sulfate ion B. sulfate ion
C. sulfite ion
D. sulfide ion
6. The NH4+1 is called
A. nitrate B. ammonia C. ammonium D. nitride
7. In a compound, the algebraic sum of the oxidation numbers of all atoms equals
A. 0 B. 1 C. 8 D. the charge on the compound
8. Name the compound N2O4 using prefixes
A. sodium tetraoxide B. dinitrogen tetraoxide C. nitrous oxide D. binitrogen peroxide
9. What is the name of the compound Ni(ClO3)2
A. nickel chlorate B. nickel chloride C. nickel chlorite D. nickel peroxide
10. The formula for dinitrogen pentaoxide would be A. N2O5 B. N2O7
C. N2O4
D. N4O2
11. What is the formula for dinitrogen trioxide
A. N2O3 B. NO3 C. N2O6
D. N2O3
12. How many atoms of fluorine are present in the molecule of carbon tetrafluoride
A. 1 B. 2
C. 4
D. 5
13. The correct name for a compound that has the formula N 2O3 is
A. dinitrogen oxide
B. nitrogen trioxide C. nitric oxide D. dinitrogen trioxide
14. Name the compound Zn3(PO4)2 A. zinc potassium oxide B. trizinc polyoxide
C. zinc phosphate
D. zinc phosphite
15. The formula which gives the total number of atoms of each type of element that are present in one molecule of a compound is the
A. empirical B. molecular C. ionic D. formula
16. Under the new system, Sn3(PO4)4 would be called
A. stannous phosphate B. tin (IV) phosphate C. tin (III) phosphate D. tin (II) phosphate
17. Which of the following formulas represents a binary compound
A. N2O5 B. NaOH C. KNO3 D. H2
18. What is the oxidation number of hydrogen in KH.
A. -1 B. 0 C. +1 D. +2
19. What is the oxidation number of fluorine in AlF3
A. -3 B. -2 C. -1 D. 0
20. What is the formula for zinc fluoride
A. ZnF B. ZnF2 C. Zn2F D. Zn2F3
21. Name the compound SiO2 using prefixes
A. silver oxide B. silicon oxide C. silicon dioxide D. monosilicon dioxide
22. Which acid has the formula CH3COOH
A. carbonic B. citric C. acetic D. ascorbic
23. A chemical formula for a molecular compound represents the composition of
A. a molecule B. an atom C. the ions that make up the compound D. the crystal lattice
24. The mercury (I) ion has a charge of.
A. -2 B. -1 C. +1 D. +2
25. Using the newer system of nomenclature Cr2(SO4)3 is named
A. chromium (II) sulfate B. chromic sulfate C. chromium (III) sulfate D. chromous sulfate
26. Which of the following is a binary compound
A. SO3 B. C2H2Cl2 C. H2SO4 D. Cl2
27. Nitric acid has the formula A. H2NO3 B. HNO3 C. H2(NO3)3 D. H(NO3)2
II. MATCH THE FORMULAS OF THE FOLLOWING ACIDS TO THEIR NAME.
28. HNO3
29. CH3COOH
30. H2SO4
31. H2C2O4
32. H2CO3
A.
B.
C.
D.
E.
PHOSPHORIC
NITRIC
OXALIC
ACETIC
SULFURIC
AB. CARBONIC
AC. PERCHLORIC
AD. HYDROCHLORIC
III. MATCH THE FOLLOWING
33. NITROGEN I CARBONATE
34. NITROGEN II CARBONATE
35. NITROGEN III CARBONATE
36. NITROGEN IV CARBONATE
37. NITROGEN V CARBONATE
A. N2(CO3)3
B. N(CO3)2
C. N2CO3
D. N2(CO3)5
E. NCO3
IV. MATCH THE FOLLOWING USING PREFIXES
38. N2O4
39. N2O5
40. N2O3
41. N0
A. NITROGEN MONOXIDE
B. DINITROGEN PENTOXIDE
C. DINITROGEN HEXOXIDE
D. BINITROGEN TRIOXIDE
E. DINITROGEN TETROXIDE
AB. NITROGEN OXIDE
AC. BINITROGEN PENTOXIDE
AD. NONE OF THE ABOVE
V. CALCULATE THE TOTAL NUMBER OF ATOMS IN THE FOLLOWING :
42. Sn3(PO4)4
43. 5 Ba3(AsO4)2 B. 12
44. 2 CuC4H4O6 C. 13
A. 7
D. 15
E. 19
AD. 75
AB. 30 AE. 23
WRITE THE FORMULAS FOR THE FOLLOWING COMPOUNDS
45. BARIUM HYDROXIDE
46. IRON III PHOSPHATE
47. AMMONIUM SULFIDE
48. COBALT II CHLORATE
49. MANGANESE II OXIDE
50. IRON III SULFATE
51. CERIUM III NITRIDE
52. SODIUM CYANIDE
WRITE THE NAMES OF THE FOLLOWING
53. Pb3(PO4)2
54. FeCr2O7
55. Na2SO4
56. NH4NO3
57. Li2Se
58. Mg(OH)2
59. Ni3(PO4)2
60. Hg(CN)2
61. Cr2(SO4)
AC. 65
WRITE THE CORRECT EMPIRICAL FORMULA FOR THE FOLLOWING:
62. C2H12O6
63. C3H6
64. C4H8O2
WHAT IS THE CHARGE OF THE X ION IN EACH OF THE FOLLOWING:
65.
X2CO3
66.
XSO3
67.
X3(PO4)2
68.
XO
69.
AlX3
70.
Ca3(XCl)2
SHOW ALL WORK AND USE PROPER SIGNIFICANT FIGURES AND SCIENTIFIC NOTATION.
CALCULATE THE NUMBER OF MOLECULES OR FORMULA UNITS FOR THE FOLLOWING:
71.
15.0 GRAMS OF AlBr3 (Al=26.98 Br=79.91)
72.
0.075 MOLES OF Fe(OH)2 (Fe=55.85 O=16.00 H=1.01)
CALCULATE THE MOLES IF YOU HAVE THE FOLLOWING:
74.
2.25 GRAMS OF CuF. (Cu=63.54 F=19.00)
75.
5.75 X 1023 MOLECULES OF H2O (H=1.01 O=16.00)
CALCULATE THE MASS (IN GRAMS) IF YOU HAVE THE FOLLOWING:
76.
5.25 MOLES OF AlPO4 (Al=26.98 P=30.97 O=16.00)
77.
2.75 X 1022 IONS OF AgOH (Ag=107.87 O=16.00 H=1.01)
78.
WHAT IS THE FORMULA FOR THE HYDRATE WHICH CONTAINS 325 G
NaCl AND 20.0 G H2O (Na=23.0 Cl= 35.5 H=1.0 O= 16.0)
79.
IF THE MOLECULAR MASS OF A COMPOUND THAT CONTAINS 4.02 G
OF N AND 11.48 G OF O IS 108 AMU, WHAT IS THE MOLECULAR FORMULA OF THIS COMPOUND.
(N=14.01 O=16.00)
80.
FIND THE PERCENT OF WATER IN THE FOLLOWING HYDRATE Sn(NO 3)2 15 H2O
(Sn(NO3)2=242.7)( H2O=18.0)
81.
FIND THE PERCENT COMPOSITION OF Sn(CrO4)2
(Sn=118.7 Cr=52.0 O=16.0)