Honors Chemistry
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Semester Final MC Review
1. Which of the following is the correct electron configuration for a neutral atom of oxygen in the ground
state?
A) 1s 2 2p 4
C) 1s 2 2s 22p 2
E) 1s 2 2s 22p 6 3s 23p 4
B) 1s 2 2s 4
D) 1s 2 2s 22p4
2. The species having the same number of electrons as Mg 2+ is
B) O 2–
A) Na
C) N–
D) Ar
E) Ne1+
C) Ne(g)
D) Ne+ (g)
E) Xe(g)
D)
E)
3. Which of the species is the most stable?
A) He(g)
B) He+ (g)
4. What is the Lewis electron–dot diagram for the sulfide ion?
A)
B)
C)
5. What is the number of electrons in an atom that has 3 protons and 4 neutrons?
A) 1
B) 7
C) 3
D) 4
6. Which subatomic particles are located in the nucleus of an He-4 atom?
A) electrons and neutrons
C) neutrons and protons
B) electrons and protons
D) neutrons, protons, and electrons
7. Base your answer to the following question on Each diagram below represents the nucleus of a different
atom.
Which diagrams represent nuclei of the same element?
A) D and E, only
B) D, E, and Q
C) Q and R, only
D) Q, R, and E
8. Which two notations represent different isotopes of the same element?
A)
and
B)
and
C)
and
D)
and
9. When compared with the energy of an electron in the first shell of a carbon atom, the energy of an electron
in the second shell of a carbon atom is
A) less
B) greater
C) the same
10. The elements on the Periodic Table are arranged in order of increasing
A) atomic mass
C) molar mass
B) atomic number
D) oxidation number
11. Which list includes elements with the most similar chemical properties?
A) Br, Ga, Hg
B) Cr, Pb, Xe
C) O, S, Se
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D) N, O, F
12. Compared to the atoms of nonmetals in Period 3, the atoms of metals in Period 3 have
A) fewer valence electrons
C) fewer electron shells
B) more valence electrons
D) more electron shells
13. Which two elements have the most similar chemical properties?
A) Be and Mg
B) Ca and Br
C) Cl and Ar
D) Na and P
14. Which Lewis electron-dot diagram represents calcium oxide?
A)
B)
C)
D)
15. Which element, represented by X, reacts with fluorine to produce the compound XF2?
A) aluminum
B) argon
C) magnesium
D) sodium
16. As the elements of Group 17 are considered in order of increasing atomic number, there is an increase in
A) atomic radius
C) first ionization energy
B) electronegativity
D) number of electrons in the first shell
17. Which element forms a compound with chlorine with the general formula MCl
A) Rb
B) Ra
C) Re
D) Rn
18. Which formula represents strontium phosphate?
A) SrPO4
B) Sr 3PO 8
C) Sr 2(PO4) 3
D) Sr 3(PO 4) 2
19. In which compound is the ratio of metal ions to nonmetal ions 1 to 2?
A) calcium bromide
C) calcium phosphide
B) calcium oxide
D) calcium sulfide
20. What is the total number of different elements present in NH 4NO 3?
A) 7
B) 9
C) 3
D) 4
21. An unknown element X can form a compound with the formula XBr 3. In which group on the Periodic
Table would element X be found?
A) 1
B) 2
C) 13
D) 14
22. What is the chemical formula of iron(III) sulfide?
A) FeS
B) Fe2S3
C) FeSO 3
D) Fe 2(SO3) 3
23. Which formula represents copper(I) oxide?
A) CuO
B) CuO 2
C) Cu 2O
D) Cu2O2
24. Which formula represents lead(II) chromate?
A) PbCrO4
B) Pb(CrO4) 2
C) Pb2CrO4
D) Pb2(CrO4) 3
25. What is the IUPAC name for the compound FeS?
A) iron(II) sulfate
B) iron(III) sulfate C) iron(II) sulfide D) Iron(III) sulfide
26. A correct name for N2O3 is
A) nitrogen (I) oxide
C) nitrogen (III) oxide
B) nitrogen (II) oxide
D) nitrogen (IV) oxide
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27. The molecular formula of glucose is C 6H12O6. What is the empirical formula of glucose?
A) CHO
B) CH 2O
C) C6H12O6
D) C12H24O12
28. What is the molecular formula of a compound that has a molecular mass of 54 and the empirical formula C
2H3?
A) C2H3
B) C4H 6
C) C6H9
D) C8H12
29. What is the mass in grams of 2.0 moles of NO 2?
A) 92
B) 60.
C) 46
D) 30.
30. The total number of moles represented by 20 grams of CaCO3 is
A) 1
B) 2
C) 0.1
D) 0.2
31. What is the empirical formula of a compound that contains 28% iron, 24% sulfur, and 48% oxygen by
mass?
A) FeSO 3
B) FeSO 4
C) Fe 2(SO3) 3
D) Fe2(SO4) 3
32. A compound consists of 25.9% nitrogen and 74.1% oxygen by mass. What is the empirical formula of the
compound?
A) NO
B) NO 2
C) N2O
D) N2O 5
33. What is the percent composition by mass of hydrogen in NH 4HCO3 (gram-formula mass = 79
grams/mole)?
A) 5.1%
B) 6.3%
C) 10.%
D) 50.%
34. The percentage by mass of Br in the compound AlBr 3 is closest to
A) 10.%
B) 25%
C) 75%
D) 90.%
35. Which element forms an ionic compound when it reacts with lithium?
A) K
B) Fe
C) Kr
D) Br
36. An ionic compound is formed when there is a reaction between the elements
A) strontium and chlorine
C) nitrogen and oxygen
B) hydrogen and chlorine
D) sulfur and oxygen
37. Which substance contains bonds that involved the transfer of electrons from one atom to another?
A) CO 2
B) NH 3
C) KBr
D) Cl 2
38. Based on bond type, which compound has the highest melting point?
A) CH 3OH
B) C6H14
C) CaCl2
D) CCl4
39. A solid substance was tested in the laboratory. The test results are listed below.
• dissolves in water
• is an electrolyte
• melts at a high temperature
Based on these results, the solid substance could be
A) Cu
B) CuBr 2
C) C
D) C6H12O6
40. Which molecule has a nonpolar covalent bond?
A)
B)
C)
D)
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41. Which formula represents a nonpolar molecule containing polar covalent bonds?
A) H2O
B) CCl4
C) NH 3
D) H2
42. Two atoms of element A unite to form a molecule with the formula A2. The bond between the atoms in the
molecule is
A) electrovalent
C) nonpolar covalent
B) ionic
D) polar covalent
43. Given the formula representing a molecule:
H–C
C–H
The molecule is
A) symmetrical and polar
C) asymmetrical and polar
B) symmetrical and nonpolar
D) asymmetrical and nonpolar
44. Which formula represents a nonpolar molecule?
A) HCl
B) H2O
C) NH 3
D) CH 4
45. Which formulas represent two polar molecules?
A) CO 2 and HCl
B) CO 2 and CH 4
C) H 2O and HCl
D) H2O and CH4
46. Which particle has the least mass?
A)
4 2 He
B)
11H
C)
10n
D)
0 -1 e
47. Which of the following sublevels has the highest energy?
A) 2p
B) 2s
C) 3p
D) 3s
48. Energy is absorbed when an electron moves from a 3d sublevel to a
A) 1s sublevel
B) 2s sublevel
C) 3p sublevel
D) 4p sublevel
49. Which electron configuration represents an atom of lithium in an excited state?
A) 1s 12s 1
B) 1s 12s 2
C) 1s 22s 1
D) 1s 22s 2
50. The bright-line spectrum of sodium is produced when energy is
A)
B)
C)
D)
absorbed as electrons move from higher to lower electron shells
absorbed as electrons move from lower to higher electron shells
released as electrons move from higher to lower electron shells
released as electrons move from lower to higher electron shells
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Answer Key
Honors Chemistry 1st Semester Review 2012-2013
1.
D
37.
C
2.
B
38.
C
3.
A
39.
B
4.
B
40.
A
5.
C
41.
B
6.
C
42.
C
7.
B
43.
B
8.
A
44.
D
9.
B
45.
C
10.
B
46.
D
11.
C
47.
C
12.
A
48.
D
13.
A
49.
B
14.
D
50.
C
15.
C
16.
A
17.
A
18.
D
19.
A
20.
C
21.
C
22.
B
23.
C
24.
A
25.
C
26.
C
27.
B
28.
B
29.
A
30.
D
31.
D
32.
D
33.
B
34.
D
35.
D
36.
A
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