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Components of Matter
Copyright D. Herrick |
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20 Questions from past exams.
Practice for speed. Aim
for 40 seconds per problem.
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1. |
Isotopes
of an element have |
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A) |
the
same
mass number |
B) |
the
same
number of neutrons |
C) |
equal
numbers of neutrons and protons |
D) |
the
same
number of protons |
E) |
the
same
number of electrons |
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2. |
The
number of neutrons in neon-20 is |
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A) 40 |
B)
10 |
C)
0 |
D) 20 |
E)
15 |
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3. |
The
number of protons in lead is |
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A)
78 |
B)
46 |
C)
61 |
D)
15 |
E)
82 |
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4. |
The
magnet in a mass spectrometer separates ions according
to their |
|
A) |
mass |
B) |
charge |
C) |
charge-to-mass
ratio |
D) |
charge
× mass |
E) |
number
of neutrons |
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5. |
The
FALSE statement is: |
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A) |
Noble
gases tend to gain electrons in chemical bonding |
B) |
nonmetals
and metals form ionic bonds |
C) |
nonmentals
form covalent bonds with other nonmetals |
D) |
most
of the elements in the periodic table are metals |
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6. |
The
formula for potassium bromide is |
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A)
K2Br |
B)
KBr2 |
C)
KBr |
D)
K2Br3 |
E)
BrK |
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7. |
The
formula for magnesium chloride is |
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A)
Mg2Cl |
B) Mg2Cl3 |
C) MgCl |
D)
Mg3Cl2 |
E) MgCl2 |
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8. |
The
formula for sodium carbonate is |
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A)
NaCO2 |
B)
NaC |
C)
Na2CO3 |
D)
NaCO3 |
E) NaC8 |
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9. |
The
formula for calcium nitride is |
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A)
CaNO2 |
B) Ca(NO2)2 |
C)
CaN2 |
D)
Ca3N2 |
E) Ca2N3 |
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10. |
The
charge on the metal ion in SnCl4·
5H2O is |
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A)
+1 |
B) +2 |
C)
+4 |
D)
+5 |
E) +9 |
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11. |
When
hydrogen chloride gas is dissolved in water it's called |
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A) |
hydrogen
chloride |
B) |
hydrochloride
acid |
C) |
hydrogen
chloride acid |
D) |
hydrochlorine
acid |
E) |
hydrochloric
acid |
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12. |
The
formula for aluminum carbide is |
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A)
Al4C3 |
B)
Al2C3 |
C)
Al3C4 |
D)
Al3C2 |
E)
AlC4 |
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13. |
The
formula for iron(III) oxide heptahydrate is |
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A) |
Fe3O2(H2O)7 |
B) |
Fe2O3
·7H2O |
C) |
(Fe3O2)7H2O |
D) |
Fe3O2
·
6H2O |
E) |
Fe2O3(H2O)7 |
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14. |
The
formula for barium
sulfite is |
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A)
BaS |
B)
BaSO2 |
C)
BaSO3 |
D)
BaSO4 |
E)
BaS2 |
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15. |
The
formula for tetraphosphorous trisulfide is |
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A)
P4S3 |
B)
P4S2 |
C)
P3S4 |
D)
P3S2 |
E)
P2S3 |
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16. |
The
formula for copper(II) nitrate is |
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A)
CuNO3 |
B)
Cu2NO3 |
C)
Cu(NO3)2 |
D)
CuNO2 |
E) Cu(NO2)3 |
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A) |
aluminum
chlorite |
B) |
aluminum
trichlorate |
C) |
aluminum
trichlorite |
D) |
aluminum
chlorate |
E) |
aluminum
perchlorate |
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A) |
dioxygen
carbide |
B) |
carbon
oxide |
C) |
carbonic
oxygen |
D) |
carbon
dioxide |
E) |
carbon
oxygen |
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19. |
Use
the atomic weights 12(C), 14(N), 16(O), 1(H) to find
the molecular weight of dinitrogen pentaoxide. |
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A)
30 |
B)
108 |
C)
68 |
D)
88 |
E) 102 |
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20. |
Use
the atomic weights 12(C), 1(H), 16(O), 23(Na) to find
the molecular weight of sodium acetate. |
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A)
82 |
B)
74 |
C)
68 |
D)
78 |
E) 84 |
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