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