A ns we/r (
K i^ a r
.e"{
M idtu'r* ;"7
l. Which statementis incorrect?
a) Mass is the quantity of matter in an object.
b) Physicalpropertiesare characteristicsthat can be determinedwithout causinga
changein compositionof a substance.
c) Solutionsare homogeneousmixtures.
d) Composition identifies what matter is madeof and how much of eachcomponent
rspresenr
Heterogeneous
matterhasuniforrnproperties.
2. Which of the following processesis a chemicalchange?
a) chopping wood.
b) boiling alcohol.
G) burning gasoline.
d) distilling moonshine.
e) melting gold.
3. Butanehasameltingpointof
-l33oCandaboilingpointof0oC.lnwhatstatedoes
butaneexist at - I 10 "C?
a) a gas
@) a liquid
c) a solid
d) a solution
e) a colloid
4. Do the indicatedarithmetic and give the answerto the correct number of significant
figures.
(0.0015x 68.5)+.5.08
a) 5.18275
b ) 5.1828
c) 5.i 83
@s.ts
e) 5.1
.to8'
+ a , I 0' "215
:
5. Which of the following statementsis NOT true of metals?
A
11
n-_
all metals
aresolids, t1* in l;?;Cl
(a) ll roomtemperature
aJ
b) Metals
havemetailic luster.
c) Metals are malleableand ductile.
d) Metals are good conductors,
e) About t/aof the elementslisted in the periodic table are metals.
.
i
6. Group24 in thepcriodictableis alsoknownas
a)
b)
(0r
d)
e)
transitionmetals
alkalimetals
alkalineearthmetals
innertransitionmetals
halogens
7. How many50 mg dosesof tetracyclinecanbe suppliedfrom 25 kg of tetracycline?
'
a) 5.0x 102 b) 5.0x 103 c) 5.0x loo
aS kt
5o ^,4,/dt"so
@
5.0x 105 e) 5.0x 106
]"f
*
>< 'Y*
l?
l+
= 5.o * ro€clos*
'+
8. Osmiumhasa densityaf 22.6g/cm'. Whatis themassin g of a blockof thismetalthat
measures
l.0l cm x 0.233cm x 0.648cm?
V = l. Dl < o , d 3 3 * D, 6 { 8
rT4
t
a) 6.75x lo-3
@=
: O.tgaf u^3
Tb ) 3 4 .5
c) 148
oj i.zi. ro'
(Dr.+s
d- = P?,6ft/c-*3
fry \=
*rV
/vvr 3
QQ,6;k - x D'19 LCc-w3-
3.q 5?
UJ
9. Thetemperature
was 136,4'Fin theshadein Libya, Whatis theequivalenttemperature
in 'C?
a) 75.8
@st.o
c)43.8
d)3e.s
e)53.2
og = Qr r ,+ ' T- 3 e "F )" +
= 5&8C
I 0. It takes0.092caloriesto heatone gramof copperby one degrecCelsius. lf 250
caloriesare requiredto heata sampleof copperfrom 15"C to 90"C, what is the
mass(g) of the copper?
b) 1.7x 103
@a
25Dc*=
v r\ =
c) 0.31
y\
d) 2.8x l0-2
x 15'C
e)72
c"X--
x o.o(,{
'T,
\J
36+
4
t'c-
I 1. Whichpairis incorrect?
a) Cu/copper
@ I-or"ua
c) Sn/tin
d) Aglsilver
e) Hg/mercury
Qa
63
12. Theion 2eCu 2*contains:
a)
b)
c)
d)
@
34protons,29neukons,29 electrons
34protons,29neutons,27 electrons
29 protons,34 neutrons,
3l electrons
29 protons,34 neutrons,29 electrons
tn protons,34 neutrons,2? electrons
13. Gallium(atomicweight_69.72)
hastwo naturally-occurring
isotopes,
the
predominant
onebeingo'Gawith isotopicweight68.9257andan abundance
of
60.47%.Whichof the followingisotopicweightsis themostlikely for theother
isotope?
@ zo.e:sr b) 67.zrs3 c) 70.2163 d) 69.9913 e) 7t.zt5l
6g,qe51 r a.LDq1 +bo
x o'J153
"A
' 61 '1Q
= -TD,qs€(
t4. Whichof thefollowingelementsis incorrectlvpairedwith thenumberof its
valenceelectrons?
a) r q K In
@so 8 b
c) sB 3
d)
::As 5
e)
zzTi 2
1 5 . Whichof thefollowingorbitalsdoesnot exist?
a) 4p
'
b)6s
c) 3d
@tt
e) 2p
1 6 .Which statementis NOT true of the elemcntBr?
a) It is a halogen.
b) lt is a liquid at RT.
@ tt is a metalloid
d) it is more electronegativethan selenium.
e) It is a representativeelement.
t1
Which of the followins electronconfizurationscorresDonds
to an elementin thc
samegroup as an elerient with a ls22\22p63s23ps
electronconfiguration?
a)
b)
c)
d)
/fi\
\-7
| s2zs22p63s23p64s23dro4p4
ls22s22p63s23p64s23dro4p6
ls22s2zp6
3s23p64s23d2
1s22s22p63s23p4
ls22s22os
18. How many unpaired electronsare in the Cobalt atom?
a) I
b)2
@t
d )4
3 d ' YLV
e)s
19. Whichof the followingwouldyou expectto havethe!!g!gg! elechonegativity?
a) Na
b)s
c) Br
@ cr
As
e)
4\1
20.Basedontheoctetrule,nitrogenwillfbrma(n)-withachargeof-.
@)
b)
c)
d)
e)
anion,3anion,3+
cation,3cation,3*
neutral atom, 0
21. What is the symbol for the periodateion?
a) IO-
b) iozc) IOr-
roi.
6)
e) IOs'
22. Whatis thechemicalformulafor iron (II) nitride?
4u*
a) FeN
b) FezN
N
3'
@rerNz
d) FezNr
e) FeN2
23. Of the following, which gives the correct order for atomic radius for Mg, Na, P, Si, Ar?
a)
b)
c)
d)
Mg>Na>P>Si>Ar
Ar>Si>P>Na>Mg
Si>P>Ar>Na>Mg
Ar>P>Si>Ms>Na
@*ulMB>Si>F>er
24. Whatis thechemicalnameof Zn(HCOr)z?
6)
5
c)
d)
e)
zincbicarbonatc
zinccarbonate
zinccarbonide
zinchydrogencarbonide
zinchydrogencarbonite
25. Whichoneof thesebondsis themostpolar?
a)C-H
@n -u
c)P *H
d) H- s
e) Br - H
26. DrawtheLewisstructurefor HzCS,Basedon theconectLewis structureandtheVSEPR
theory,themoleculeis
H
a) linear
b) angular
c) tetrahedral
Cd)trigonalplanar
'c
a
H
e) octahedral
27. What are the bond anglesin SiBrq?
a) 180"
b) 120'
EN
I
d) 104.5' @ton.r"
&r ' - - ,3 i
c) 90"
4
Or
\- 2
c!'/r
is correctfor O:?
28. DrawtheLewisstructurefor O:. Whichof thefollowingstatements
;.
e).
a"
a) Themoleculeis polar.
themolecule.
to represent
@ fne structurerequiresresonance
pairs
lone
of
electrons
on
the
central
atom
c) Therearetwo
d) Themoleculeis linear.
e) Themoleculedoesnot exist.
is correctfor COz?
29. DrawtheLewisslructurefor COz. Whichof thefollowingstatements
(:--t-
t
'l A- f
tJ
+->
a,
-Q-;^oorr
- t\a
€a
p6b';t
(Ot rne molecule
is nonpolar.
b)
c)
d)
e)
Themoleculehasa bentgeometry.
Thecentralatomhasonelonepair.
Thebondangleis 120o.
structures.
Themoleculehasseveralresonance
30. How manylonepairsarein thecorrectLewisstructurefor CO?
a) none
b) one
@r*'
d) three
ic= or
e) four
arna-l-s