IVY TECH CHEM 101 MIDTERM QUESTIONS
WITH CORRECT ANSWERS
TheBdefinitionBofBaBscientificBlawBisB-BCORRECTBANSWERB-
aBnumberBofBsimilarBobservationsBgeneralizedBintoBaBbriefBstatementBsummarizingBpastBobservati
onsBandBpredictingBnewBones
WhichBstatementBaboutBaBhypothesisBisBTRUEB-BCORRECTBANSWERB-
AllBofBtheBaboveBstatementsBareBtrue.
WhichBofBtheBfollowingBisBanBexampleBofBaBscientificBlawB-BCORRECTBANSWERB-
InBaBchemicalBreaction,BmatterBisBneitherBcreatedBnorBdestroyed.
ABsampleBofBwoodBwithBaBmassBofB3.0BgramsBwasBburnedBinBanBopenBdish.BTheBashesBweighedB1.2B
grams.BWhatBhappenedBtoBtheBrestBofBtheBwood?B-BCORRECTBANSWERB-
TheBremainingB1.8BgramsBwasBconvertedBintoBgaseousBcompounds.
WhichBstatementBwouldBNOTBbeBanBexampleBofB"quantification"B-BCORRECTBANSWERB-
TheBwaterBinBtheBswimmingBpoolBfeelsBcolderBthanBitBwasByesterday.
ABpopularBscienceBdemonstrationBisBtoBtakeBseveralBliquidsBthatBwillBnotBmixBtogetherBandB"stack"B
theseBliquidsBinBaBtallBglassBcylinder.BSupposeBtheBfollowingBthreeBliquidsBwereBplacesBinBtheBsameB
tall,BnarrowBglassBcylinder:
SUBSTANCEBDENSITYB(g/mL)
vinegarB1.01
motorBoilB0.87
cornBsyrupB1.36
, TheseBliquidsBwouldBstackBinBwhichBorder?B-BCORRECTBANSWERB-
motorBoilBonBtop,BvinegarBinBtheBmiddle,BcornBsyrupBonBtheBbottom
SupposeBaBboatBengineBleaksB938BmLBofBoilBintoBaBlake.BTheBmassBofBthisBspilledBoilBisB823Bg.BTheBoil
BwillBnotBmixBwithBtheBlakeBwater.BWhichBstatementBisBtrue?B-BCORRECTBANSWERB-
TheBoilBwillBfloatBbecauseBitsBdensityBofB0.877Bg/mLBisBlessBthanBtheBdensityBofBwater.
DetermineBtheBanswerBtoBtheBfollowingBequationBwithBcorrectBnumberBofBsignificantBfigures:
2.02+8.102-0.0297=B-BCORRECTBANSWERB-10.09
HowBmanyBmillilitersBareBinB17.5BLB-BCORRECTBANSWERB-1.75BxB104BmL
GivenBtheBdensityBofBAuBisB19.3Bg/cm3,BdetermineBtheBmassBofBgoldB(inBgrams)BinBanBingotBwithBth
eBdimensionsBofB10.0BinBxB4.00BinBxB3.00Bin.B-BCORRECTBANSWERB-3.80BxB104
TheBcorrectBdecimalBrepresentationBofB6.453BxB103Bis:B-BCORRECTBANSWERB-6,453
ABplasticBblockBhasBdimensionsBofB2.2BcmBxB3.0BcmBxB1.5BcmBandBaBmassBofB12.4Bgrams.BWillBtheBbl
ockBfloatBinBwaterBandBwhyB-BCORRECTBANSWERB-
No,BbecauseBtheBdensityBofBtheBblockBisB1.3Bg/mLBwhichBisBgreaterBthanBtheBdensityBofBwater.
HowBmanyBgramsBareBinB1.48BxB10^7Bμg?B-BCORRECTBANSWERB-14.8
DetermineBtheBanswerBforBtheBequationBbelowBwithBcorrectBnumberBofBsignificantBfigures:
B 1.2*1.79=B-BCORRECTBANSWERB-2.1
WITH CORRECT ANSWERS
TheBdefinitionBofBaBscientificBlawBisB-BCORRECTBANSWERB-
aBnumberBofBsimilarBobservationsBgeneralizedBintoBaBbriefBstatementBsummarizingBpastBobservati
onsBandBpredictingBnewBones
WhichBstatementBaboutBaBhypothesisBisBTRUEB-BCORRECTBANSWERB-
AllBofBtheBaboveBstatementsBareBtrue.
WhichBofBtheBfollowingBisBanBexampleBofBaBscientificBlawB-BCORRECTBANSWERB-
InBaBchemicalBreaction,BmatterBisBneitherBcreatedBnorBdestroyed.
ABsampleBofBwoodBwithBaBmassBofB3.0BgramsBwasBburnedBinBanBopenBdish.BTheBashesBweighedB1.2B
grams.BWhatBhappenedBtoBtheBrestBofBtheBwood?B-BCORRECTBANSWERB-
TheBremainingB1.8BgramsBwasBconvertedBintoBgaseousBcompounds.
WhichBstatementBwouldBNOTBbeBanBexampleBofB"quantification"B-BCORRECTBANSWERB-
TheBwaterBinBtheBswimmingBpoolBfeelsBcolderBthanBitBwasByesterday.
ABpopularBscienceBdemonstrationBisBtoBtakeBseveralBliquidsBthatBwillBnotBmixBtogetherBandB"stack"B
theseBliquidsBinBaBtallBglassBcylinder.BSupposeBtheBfollowingBthreeBliquidsBwereBplacesBinBtheBsameB
tall,BnarrowBglassBcylinder:
SUBSTANCEBDENSITYB(g/mL)
vinegarB1.01
motorBoilB0.87
cornBsyrupB1.36
, TheseBliquidsBwouldBstackBinBwhichBorder?B-BCORRECTBANSWERB-
motorBoilBonBtop,BvinegarBinBtheBmiddle,BcornBsyrupBonBtheBbottom
SupposeBaBboatBengineBleaksB938BmLBofBoilBintoBaBlake.BTheBmassBofBthisBspilledBoilBisB823Bg.BTheBoil
BwillBnotBmixBwithBtheBlakeBwater.BWhichBstatementBisBtrue?B-BCORRECTBANSWERB-
TheBoilBwillBfloatBbecauseBitsBdensityBofB0.877Bg/mLBisBlessBthanBtheBdensityBofBwater.
DetermineBtheBanswerBtoBtheBfollowingBequationBwithBcorrectBnumberBofBsignificantBfigures:
2.02+8.102-0.0297=B-BCORRECTBANSWERB-10.09
HowBmanyBmillilitersBareBinB17.5BLB-BCORRECTBANSWERB-1.75BxB104BmL
GivenBtheBdensityBofBAuBisB19.3Bg/cm3,BdetermineBtheBmassBofBgoldB(inBgrams)BinBanBingotBwithBth
eBdimensionsBofB10.0BinBxB4.00BinBxB3.00Bin.B-BCORRECTBANSWERB-3.80BxB104
TheBcorrectBdecimalBrepresentationBofB6.453BxB103Bis:B-BCORRECTBANSWERB-6,453
ABplasticBblockBhasBdimensionsBofB2.2BcmBxB3.0BcmBxB1.5BcmBandBaBmassBofB12.4Bgrams.BWillBtheBbl
ockBfloatBinBwaterBandBwhyB-BCORRECTBANSWERB-
No,BbecauseBtheBdensityBofBtheBblockBisB1.3Bg/mLBwhichBisBgreaterBthanBtheBdensityBofBwater.
HowBmanyBgramsBareBinB1.48BxB10^7Bμg?B-BCORRECTBANSWERB-14.8
DetermineBtheBanswerBforBtheBequationBbelowBwithBcorrectBnumberBofBsignificantBfigures:
B 1.2*1.79=B-BCORRECTBANSWERB-2.1
