chem 047 –final review practice problems
Post on 28-Oct-2021
4 Views
Preview:
TRANSCRIPT
1 Chem 047 –Final Review practice problems
Chemistry 047 Final Review Example Problems – (not all types of problems are
covered here!)
1. Scientific notation
a) 6.7
b) 0.0000002
c) 2005000
d) 71 × 103
e) 33 × 10−3
Write in standard notation f) 2.66 × 104
g) 1.5 × 10−2
2. Convert metric to metric
a) 7.2 cm = ____________ mm
b) 400 cm = ___________ m
c) 1.8 m = ______________ cm
d) 306.5 mm = ___________ m
e) 1528.2 g = ____________ kg
f) 3.63 kg = ______________ g
g) 923.6 ml = _____________ L
h) 5.86 L = ________________ ml
i) 5.46m3= ________________L
j) 25.2L = _________________m3
k) 232cm3 = _______________ml
2 Chem 047 –Final Review practice problems
3. Convert between oF, oC, K (use conversion formulas from data sheet)
a) 253 Kelvin to Celsius
b) 17.8 Celsius to Kelvin
c) -89.5 Fahrenheit to Celsius
d) Convert 37.8 Fahrenheit to Kelvin
4. Significant figures
a) What are the rules for sig figs? Include ones for =,-,*, and ÷
How many significant figures in each of the following?
b) 1234 _____
c) 0.023 _____
d) 890 _____
e) 91010 _____
f) 9010.0 _____
3 Chem 047 –Final Review practice problems
g) 1090.0010 _____
h) 0.00120 _____
i) 3.4 x 104 _____
j) 9.0 x 10-3 _____
k) 9.010 x 10-2 _____
l) 0.00030 _____
m) 1020010 _____
n) 780. _____
5. Density
a) Calculate the mass of a liquid with a density of 3.2 g/mL and a volume of 25 mL.
b) An irregular object with a mass of 18 kg displaces 2.5 L of water when placed in a large overflow container. Calculate the density of the object.
c) A graduated cylinder has a mass of 80. g when empty. When 20. mL of water is added, the graduated cylinder has a mass of 100. g. If a stone is added to the graduated cylinder, the water level rises to 45 mL and the total mass is now 156 g. What is the density of the stone?
4 Chem 047 –Final Review practice problems
d) A substance has a density of 5.83 g/cm3. If a piece of this substance weighing 9.2g is
dropped into a graduated cylinder of water containing 62.0ml, what will be the new
volume?
6. Physical states
If a substance has a melting point of 103oC and a boiling point of 152oC. What would
its physical state be at 125oC?
If you know the order of states (solidliquid gas) you can always figure out these
questions!
7. Physical and chem properties and changes
Classify each of the following as a chemical or physical change or chemical or physical
property:
1. _____ Heat conductivity 8. _____ Combustible
2. _____ Silver tarnishing 9. _____ Water freezing
3. _____ baking bread 10. _____ Wood burning
4. _____ magnetizing steel 11. _____ Milk souring
5. _____ length of metal object 12. _____ Brittleness
6. _____ shortening melting
7. _____ exploding dynamite
8. Classify between elements, molecules, compounds, mixtures
1. Sand 2. Salt 3. Pure Water
4. Soil 5. Sugar Water 6. Air
7. Carbon Dioxide 8. Gold 9. Brass
10. Oxygen 11. Italian Salad Dressing 12. Salt Water
5 Chem 047 –Final Review practice problems
13. Raisin Bran 14. Silver 15. Lithium Iodide
6 Chem 047 –Final Review practice problems
9. Nomenclature
1. Potassium dichromate
2. Lithium sulfide
3. Potassium bromide
4. Cesium iodide
5. Calcium phosphide
6. Sodium fluoride
7. Strontium oxide
8. Beryllium sulfide
9. Magnesium bromide
10. Lithium oxide
11. Strontium chloride
12. Barium bromide
13. Magnesium sulfide
14. Magnesium iodide
15. Hydrofluoric acid
16. Barium phosphide
17. Sodium phosphate
18. Potassium chloride
19. Lithium nitride
20. Calcium sulfide
21. Rubidium oxide
22. Strontium nitride
23. Cesium phosphide
24. Magnesium carbonate
25. Beryllium sulfate
26. Dinitrogen Tetroxide
27. Carbon dioxide
29. Hydroiodic acid
30. Iodic acid
33. Phosphorus pentachloride
34. Iodine monochloride
35. Antimony (III) fluoride
36. Bromine monofluoride
37. Bromine dioxide
38. Dinitrogen pentoxide
39. Carbon monosulfide
40. Tellurium dioxide
41. Phosphorus tribromide
42. Carbon tetraiodide
43. Vanadium (V) chromate
44. Zinc carbonate
45. Silver hydroxide
46. Vanadium (III) chromate
47. Mercury (II) iodide
48. Uranium (V) nitrate
49. Nickel (III) nitride
50. Sulfuric acid
51. ScCl3
52. HCl(aq)
53. PtO2
54. Sb(ClO3)5
55. GeS2
56. ZnO
57. VSO4
7 Chem 047 –Final Review practice problems
58. CuCl2
59. TiO2
60. NiN
61. Ni3(PO4)2
62. CoF3
63. Au2O3
64. Zn3P2
65. Cr(NO3)6
67. NaIO3
68. NaI
69. H2SO3 (aq)
70. H2CO3 (aq)
71. AlN
72. AlH3
73. Li3AsO4
74. NaCN
75. Na2O2
76. Li3PO3
77. KHCO3
78. HF(aq)
79. AuI2
80. KMnO4
81. Na2Cr2O7
82. Ag2CrO4
83. AgCl
85. RaF2
86. KSCN
87. FeS
88. Fe2(SO3)3
89. FeSO4
90. MgS
92. RbCl
93. Cu(OH)2
94. Mg3N2
95. Cu3N
96. LiH
97. K2O
98. K2O2
99. Li3N
100. CBr4
101. N2O5
102. NCl3
103. PCl3
8 Chem 047 –Final Review practice problems
10. Calculate Molar Mass
BF3
CCl2F2
Mg(OH)2
11. To 18. On Final Review List
Refer to previous practice worksheets…
19. Info on Atoms
Name Symbol Atomic # Mass # # Protons # Neutrons # Electrons
Al+3 14
Iron
ion
56 24
15 16 18
F-1 19
Name Symbol Atomic # Mass # # Protons # Neutrons # Electrons
Selenium 45
222 86
118 79
11
12
9 Chem 047 –Final Review practice problems
20. What is an isotope?
21. Electron configurations –do some of the shorter ones as full configurations for
practice, and the rest as abbreviated.
a. Boron
b. Silicon
c. Sulfur
d. Calcium
e. Rubidium
f. Chromium
g. Gallium
h. Neon
i. Vanadium
j. Copper
22. Periodic Table Trends
For each of the following sets of atoms, rank the atoms from smallest to largest atomic radius.
a. C, Li, F b. Na, Li, K c. O, Ge, P d. Si, C, N e. Ar, Cl, Br
For each of the following sets of atoms, rank them from lowest to highest ionization energy.
a. Mg, Si, S b. Mg, Ba, Ca c. F, Br, Cl d. Ne, Cu, Ba e. N, Si, P
10 Chem 047 –Final Review practice problems
For each of the following sets of atoms, rank them from lowest to highest electronegativity.
a. N, C, Li b. Ne, O, C c. O, P, Si d. Mg, K, P e. F, S, He
23. Valence electrons and unpaired electrons
For each of the following how many valence electrons and unpaired electrons available
for bonding:
a. Si
b. Mg
c. Se
d. Pb2+
24. Lewis Dot Diagrams
a. Magnesium sulfide
b. Calcium fluoride
c. Potassium oxide
d. Na3N
11 Chem 047 –Final Review practice problems
e. Ca3P2
f. H2S
g. NH4+
h. PO43-
i. SiO2
25. Conjugate acid/base pairs
Find the reactant that is the conjugate pair of each product:
a) HClO4(aq) + H2O(l) ⇄ H3O+(aq) + ClO4–(aq)
b) H2SO3(aq) + H2O(l) ⇄ H3O+(aq) + HSO3–(aq)
c) HC2H3O2(aq) + H2O(l) ⇄ H3O+(aq) + C2H3O2–(aq)
d) H2S(g) + H2O(l) ⇄ H3O+(aq) + HS–(aq)
12 Chem 047 –Final Review practice problems
e) HSO3–(aq) + H2O(l) ⇄ H3O+(aq) + SO32–(aq)
f) NH3(g) + H2O(l) ⇄ NH4+(aq) + OH–(aq)
g) HF(aq) + HSO3–(aq) ⇄ F–(aq) + H2SO3(aq)
h) HNO2(aq) + HS–(aq) ⇄ NO2–(aq) + H2S(aq)
How many Hydrogen ions are accepted or donated in each case? Can you accept or donate more than this number and still be considered a conjugate acid/base pair?
26. Solution stoichiometry and molarity questions
Refer to past practice worksheets and problems.
27. Calculate concentration of ions in solution
Refer to past practice worksheets and problems.
13 Chem 047 –Final Review practice problems
top related