Honors Chemistry
2.7-2.9 Exam Review-Key
Name____________________________________
1) Which one of the following is most likely to lose electrons when forming an ion?
A) F
B) P
C) Rh
D) S
E) N
Answer: C
2) Which species has 54 electrons?
A) 132 Xe+
54
128
B)
Te252
C) 118 Sn2+
50
112
D)
Cd
48
E) 132 Xe2+
54
Answer: B
3) Which of the following compounds would you expect to be ionic?
A) SF6
B) H2O
C) H2O2
D) NH3
E) CaO
Answer: E
4) Which pair of elements is most apt to form an ionic compound with each other?
A) barium, bromine
B) calcium, sodium
C) oxygen, fluorine
D) sulfur, fluorine
E) nitrogen, hydrogen
Answer: A
5) Which species below is the nitrite ion?
A) NO2B) NH4+
C) NO3D) N3E) N3Answer: A
6) Barium reacts with a polyatomic ion to form a compound with the general formula
Ba3(X)2. What would be the most likely formula for the compound formed between
sodium and the polyatomic ion X?
A) NaX
B) Na2X
C) Na2X2
D) Na3X
E) Na3X2
Answer: D
7) The charge on the copper ion in the salt CuO is __________.
A) +1
B) +2
C) +3
D) -1
E) -2
Answer: B
8) Which formula/name pair is incorrect?
A) Mn(NO2)4
manganese(II) nitrite
B) Mg(NO3)2
magnesium nitrate
C) Mn(NO3)2
manganese(II) nitrate
D) Mg3N2
magnesium nitrite
E) Mg(MnO4)2 magnesium permanganate
Answer: D
9) Which one of the following is the formula of hydrochloric acid?
A) HClO3
B) HClO4
C) HClO
D) HCl
E) HClO2
Answer: D
10) The suffix -ide is used primarily __________.
A) for monatomic anion names
B) for polyatomic cation names
C) for the name of the first element in a molecular compound
D) to indicate binary acids
E) for monoatomic cations
Answer: A
11) Which one of the following compounds is chromium(III) oxide?
A) Cr2O3
B) CrO3
C) Cr3O2
D) Cr3O
E) Cr2O4
Answer: A
12) The correct name for MgF2 is __________.
A) monomagnesium difluoride
B) magnesium difluoride
C) manganese difluoride
D) manganese bifluoride
E) magnesium fluoride
Answer: E
13) The correct name for HNO2 is __________.
A) nitrous acid
B) nitric acid
C) hydrogen nitrate
D) hyponitrous acid
E) pernitric acid
Answer: A
14) The charge on the __________ ion is -3.
A) sulfate
B) acetate
C) permanganate
D) oxide
E) nitride
Answer: E
15) Which element forms an ion with the same charge as the ammonium ion?
A) potassium
B) chlorine
C) calcium
D) oxygen
E) nitrogen
Answer: A
16) Which metal does not form cations of differing charges?
A) Na
B) Cu
C) Co
D) Fe
E) Sn
Answer: A
17) The correct name for Ni(CN)2 is __________.
A) nickel (I) cyanide
B) nickel cyanate
C) nickel carbonate
D) nickel (II) cyanide
E) nickel (I) nitride
Answer: D
18) Which metal is not required to have its charge specified in the names of ionic
compounds it forms?
A) Mn
B) Fe
C) Cu
D) Ca
E) Pb
Answer: D
19) __________ typically form ions with a 2+ charge.
A) Alkaline earth metals
B) Halogens
C) Chalcogens
D) Alkali metals
E) Transition metals
Answer: A
20) Oxygen forms an ion with a charge(oxidation number) of __________.
A) 2B) 2+
C) 3D) 3+
E) 6+
Answer: A
21) Predict the empirical formula of the ionic compound that forms from magnesium
and oxygen.
A) Mg2O
B) MgO
C) MgO2
D) Mg2O2
E) Mg3O2
Answer: B
22) The correct name for K2S is __________.
A) potassium sulfate
B) potassium disulfide
C) potassium bisulfide
D) potassium sulfide
E) dipotassium sulfate
Answer: D
23) The correct name for CaH2 is __________.
A) hydrocalcium
B) calcium dihydride
C) calcium hydroxide
D) calcium dihydroxide
E) calcium hydride
Answer: E
24) The correct name for SO is __________.
A) sulfur oxide
B) sulfur monoxide
C) sulfoxide
D) sulfate
E) sulfite
Answer: B
25) The correct name for H2CO3 is __________.
A) carbonous acid
B) hydrocarbonate
C) carbonic acid
D) carbohydrate
E) carbohydric acid
Answer: C
26) The correct name for H2SO4 is __________.
A) sulfuric acid
B) sulfurous acid
C) hydrosulfuric acid
D) hydrosulfic acid
E) sulfur hydroxide
Answer: A
27) The correct name for HClO is __________.
A) hydrochloric acid
B) perchloric acid
C) chloric acid
D) chlorous acid
E) hypochlorous acid
Answer: E
28) The name of PCl3 is __________.
A) potassium chloride
B) phosphorus trichloride
C) phosphorous(III) chloride
D) monophosphorous trichloride
E) trichloro potassium
Answer: B
29) The correct formula of iron(III) bromide is __________.
A) FeBr2
B) FeBr3
C) FeBr
D) Fe3Br3
E) Fe3Br
Answer: B
30) The correct name for Mg(ClO3)2 is __________.
A) magnesium chlorate
B) manganese chlorate
C) magnesium chloroxide
D) magnesium perchlorate
E) manganese perchlorate
Answer: A
31) Chromium and chlorine form an ionic compound whose formula is CrCl 3. The
name of this compound is __________.
A) chromium chlorine
B) chromium(III) chloride
C) monochromium trichloride
D) chromium(III) trichloride
E) chromic trichloride
Answer: B
32) The name of the binary compound N2O4 is __________.
A) nitrogen oxide
B) nitrous oxide
C) nitrogen(IV) oxide
D) dinitrogen tetroxide
E) oxygen nitride
Answer: D
33) The name of the ionic compound NH4CN is __________.
A) nitrogen hydrogen cyanate
B) ammonium carbonitride
C) ammonium cyanide
D) ammonium hydrogen cyanate
E) cyanonitride
Answer: C
34) What is the formula for perchloric acid?
A) HClO
B) HClO3
C) HClO4
D) HClO2
E) HCl
Answer: C
35) The name of the ionic compound RbBrO4 is __________.
A) rubidium perbromate
B) rubidium bromate
C) rubidium hypobromate
D) rubidium perbromite
E) rubidium bromide
Answer: A
36) The correct name for the N3- ion is the:
A) nitrate ion
B) nitride ion
C) nitrite ion
D) nitric ion
Answer: B
37) When naming an ion of a transition metal that has more than one common ionic
charge,the numerical value of the charge is indicated by a:
A) prefix
B) suffix
C) roman numeral
D) subscript after the name
Answer: C
38) Which element when combined with chlorine would most likely form an ionic
compound?
A) lithium
B) carbon
C) phosphorous
D) bromine
Answer: A
39) The Ion Fe3+ forms when:
A) an atom of iron loses two electrons
B) an atom of zinc loses two electrons
C) an atom of iron loses three electrons
D) an atom of iron gains three electrons
Answer: C
40)The metals in groups 1,2, and 3:
A) gain electrons when they form ions
B) form ions with a charge found by subtracting the group number from 8
C) all for ions with a 1+ charge
D) lose electrons when they form ions
Answer: D
41) The charged formed from the sulfide ions is:
A) 2B) 2+
C) 1D) 1+
Answer: A
42) The charged formed on hydrogen when it combines with metals:
A) 2B) 2+
C) 1D) 1+
Answer: B
43) The correct formula for molybdenum(IV) hypochlorite is __________.
A) Mo(ClO3)4
B) Mo(ClO)4
C) Mo(ClO2)4
D) Mo(ClO4)4
E) MoCl4
Answer: B
44) The formula of ammonium carbonate is __________.
A) (NH4)2CO3
B) N H4CO2
C) (NH3)2CO4
D) (NH3)2CO3
E) N2(CO3)3
Answer: A
45) The formula for aluminum hydroxide is __________.
A) AlOH
B) Al3OH
C) Al2(OH)3
D) Al(OH)3
E) Al2O3
Answer: D
For each pair of ions listed, write the correct ionic formula by combining the two ions (Hint: Don’t forget
to use the criss-cross method.)
Ions
Formula
7.
Calcium and Hydride
CaH2
8.
Sodium and Sulfate
Na2SO4
9.
Iron(III) and Oxide
Fe2O3
10.
Vandium(II) and Nitrite
V(NO2)2
11.
Aluminum and Carbonate
Al2(CO3)3