ChemistryNineWeeksAssessment
A
1 . You are heatinga substancein a test tube. Alwayspoint the
open end ofthe tube (SCShZ)
A) toward yourself.
B) toward your lab partner.
C) toward anotherclassmate.
D) awayfrom all people.
8.
9.
2.
Five1 pesetacoinsfrom Spainwere droppedinto a
graduatedcylindercontaining20.2OmL of water. The
volumeof the water increasedto 22.05m1. A singlecoin
had a massof 0.99gram. What is the identityof the metal
usedfor the Spanish1 pesetacoins? (SCSh4)
Element
aluminum
ztnc
copper
silver
A) aluminum
B) zinc
Density(S/mr)
2.7
7.t
9.0
10.0
C) copper
D) silver
the percenterrorof a densitycalculation
of L.2Sg/cm3based
on lab measurements?(SCSh5b)
A) 8L.2%
c) 72.8%
B) L8.8%
D) -23.2%
Whichof the followingis mostlikelyto producedatathat are
not precise? (SCShsc)
A) a balancethat is not set to zero
B) not r€adinga graduatedcylinderat eye level
C) alteringthe procedureduringan experiment
D) makingthe sameerror with eachtrial
5 . Analyzethe dartboardsbelow. Which player's
dartboard
displaysneitheraccuracynor precision
? (Scshsc)
A) Pam
5.
7.
Jasmine
B) Jasmine
dissolving
sugarin water
burninga scented
candle
cuttingan appleIntoslices
meltinga stickof butter
(sclb)
Sodiumisa silvery-gray
metalthat issosoftit canbesliced
with a knife.Whatdidthat statement
tell you? (SClb)
A) the physical
properties
of sodium
B) the chemical
properties
of sodium
c) the typesof chemical
changes
sodiumis capable
of
undergoing
D) the ionssodiumcanform
10. Whatisthe massof a moleof Ca(OH)r? (SC2c)
A) 30.03grams
C) 58.10grams
B) 57.09grams
D) 74.10grams
3 . A handbookgivesthe densityof calciumas 1.54g/cm3.What is
Pam
Which of the followingis an exampleof a chemicalchange?
A)
B)
C)
D)
@
Carlos
11. Whatisthe totalnumberof atomscontained
in 2.00moles
of nickel(Ni)?
(sczc)
A) s8.69
C) 6.022xto23
B) 117.38
D) t.2}4xt}2a
12. Which of the followingcomparisonscorrectlydescribes
subatomicparticles? (SC3a)
A) An electronhasa negativechargeand a masslarger
than that of a proton.
B) A neutron hasa negativechargeand a masssmaller
than that of a proton.
C) A neutron hasa neutralchargeand a masslargerthan
that of an electron.
D) A proton hasa positivechargeand a masssmallerthan
that of an electron.
L3. Whencompared
to sulfur-32,
sulfur-34
hasmore_. (SC3a)
A) protons
C) energylevels
B) neutrons
D) bondingconfigurations
t4. Selectthe orbitalconfigurationrepresentingthe least
reactiveelement. (SC3b)
^,ryryry9ry
C) Carlos
lf nuclearfusionoccurs,elementsmust undergowhat
process? (SCla)
A) sublimation
C) electron transfer
B) phasechange
D) identitychange
When copper-67undergoesbeta decay,which of the
followingisotopesis produced? tSCla)
A) copper-66
C) nickel-57
B) copper-58
D) zinc-67
B)
c)
D)
mruflHro
rum
rumilm
rumnmm
f,s
Zs
2p
1s
2s
2p
1s
2s
2p
3s
3p
1 5 . An elementwith the followingorbitalconfigurationwould
most likelyshow which type of property? (SC3b)
ruM[Htr
1s
2s
Zo
A) gasat roomtemperature
B) liquidat roomtemperature
c) conductelectricity
D ) magnetic
c) 132
tilRt
t
(sc3c)
18. Siliconhasthree naturallyoccurringisotopes(Si_29,
Si_2g,
and Si-30).Usethe table below to determinethe average
atomic massfor silicon. (SC3d)
Silicon-29
Silicon-30
A) 28.09amu
B) 28.33amu
most likely to form a negativelychargedion? (SC4b)
A) gold (Au)
C ) b a r i u m( B a )
B) chlorine(Cl)
D) neon (Ne)
D) 88
1 7 . A neutralatom hasa massnumberof 197 and has 11g
neutrons.Which isotopeis it? (SC3c)
A) Au-197
C) Hg-L97
B) Sn-118
D) At-21s
Silicon-28
the secondrow of the periodictable, beginningwith lithium
(Li)and endingwith neon (Ne)? (SCaa)
A) The atomic massincreasesby one with eachelement.
B) The numberof energylevelsincreases.
C) The atomicradiusdecreases.
D) The numberof electronsin the outer shelldecreases.
24. Basedon its positionin the periodictable,which elementis
1 6 . Howmanyprotonsarein an atomrepresented
by
A) 22O
B) 1-74
23. Whichtrend is observedwhen movingfrom left to right in
27.98
28.98
29.97
C ) 2 8 . 5 4a m u
D ) 2 9 . 7 0a m u
92.21,
4.70
25. lodinewouldhavechemical
properties
rnostlike
n
PeriodlcTable*f the Htements r-I
U
I
fl
-il-
1t
1l
(sc4b)
A) manganese(Mn)
B) tellurium(Te)
3.09
C) chlorine(Cl)
D) xenon(Xe)
26. What is the electronconfigurationfor sulfur(S)? (SC3b)
A) Ls22s22p4B) 1s22s22p63s6
c) 1s22s22p53s23p4
D) 1s22s22p63s23p'
19. Aluminum
is a silvery-gray
metalused
extensively
in the aircraftindustry.Which
isotopeof aluminu
m is in the greatest
abundance?(SC3d)
A) Ar-13
c) At-26
B) At-2s
Dl Al-27
27. When nickel-60undergoesalphadecay,which isotopeis
produced? (SCla)
A) nickel-S6
B) nickel-64
C) iron-56
D) iron-26
28. Whichof the followingcorrectlyshowsboth a CORRECT
20. Whichof the followingphenomenais an indicatorthat
ion
pair and the ioniccompoundformed by the ions? (SClc)
electronsin atomsare limitedto specificenergylevels?
A) Atoms move faster when heated.
A. Li*land O-2= Lioz
C. Sn*2and N-3= Sn2N3
(SC3f)
B) Lightgivenoff by atomsis all at the samewavelength.
B. Cu*2and Se-2= CuzSe2 D. Au*1and s-, = RuzS
C) Lightemittedfrom excitedatomsoccursonly at specific
29. In Sn(SOa)2
wavelengths.
the chargeon the tin ion is _.
(SClc)
D) The DopplerEffectrequiresa shift in wavelengthwhen
A. +4
B. +3
c. +2
D. _2
atoms move.
30. Choosethe pair of namesand formulasthat doesNOT
21. A line emissionspectrumof an atom is causedby the energy
match. (scld)
releasedwhen electrons_.
= 3a m m o n i u mc a r b o n a t e
A. (NH4)2CO
(SC3f)
A) jump to a higherenergylevel
B. FeO = iron (il) oxide
B) fall to a lower energy level
C . A l B r 3= a l u m i n u mt r i b r o m i d e
C) escapefrom the influenceofthe nucleus
D. Cu2S= copper(l) sulfide
D) are capturedand convertedto protons
31. Choosethe pair of namesand formulasthat doesNOT
22. Which elementhasthe greatestelectronegativity
match. (scld)
value?
A) hydrogen(H)
A.
P2Os= diphosphoruspentoxide
C) astatine(At)
(Scaa)
B) fluorine(F)
B.
Br2O7= dibromineheptoxide
D ) f r a n c i u m( F r )
C. NzCl4= dinitrogenchloride
= tetraphosphorus
D. P4O1o
decoxide