,This nbook nis na ngift nthat nwe nhope nwould nbe nof nhelp nto nour nfamily nat nSTEM.
Sincerely,
STEM nFreelancer’s nassociation
Chapter n1: nChemical nFoundations
1. Which nof nthe nfollowing nis nan nexample nof na nquantitative nobservation?
A) The npiece nof nmetal nis nlonger nthan nthe npiece nof nwood.
B) Solution n1 nis nmuch ndarker nthan nsolution n2.
C) The nliquid nin nbeaker nA nis nblue.
D) The ntemperature nof nthe nliquid nis n60°C.
E) At nleast ntwo nof nthe nabove n(A-D) nare nquantitative
nobservations.
ANS: n D DIF: Easy REF: 1.2
KEY: n Chemistry n| ngeneral nchemistry n| ngeneral nconcepts n| nscientific
nmethodnMSC: n Conceptual
2. A nquantitative nobservation
A) contains na nnumber nand na nunit
B) does nnot ncontain na nnumber
C) always nmakes na ncomparison
D) must nbe nobtained nthrough
nexperimentation
E) is nnone nof nthese
ANS: n A DIF: Easy REF: 1.2
KEY: n Chemistry n| ngeneral nchemistry n| ngeneral nconcepts n| nscientific
nmethodnMSC: n Conceptual
3. Generally, nobserved nbehavior nthat ncan nbe nformulated ninto na nstatement,
nsometimesnmathematical nin nnature, nis ncalled na(n)
A) observation
B) measurement
C) theory
D) natural nlaw
E) experiment
ANS: n D DIF: Easy REF: 1.2
KEY: n Chemistry n| ngeneral nchemistry n| ngeneral nconcepts n| nscientific
nmethodnMSC: n Conceptual
4. The nstatement n“The ntotal nmass nof nmaterials nis nnot naffected nby na nchemical
nchange nin nthosenmaterials” nis ncalled na(n)
A) observation
B) measurement
C) theory
D) natural nlaw
E) experiment
ANS: n D DIF: Easy REF: 1.2
KEY: n Chemistry n| ngeneral nchemistry n| ngeneral nconcepts n| nscientific
nmethodnMSC: n Conceptual
5. A nchemical ntheory nthat nhas nbeen nknown nfor na nlong ntime nbecomes na nlaw.
, ANS: n F DIF: Easy REF: 1.2
KEY: n Chemistry n| ngeneral nchemistry n| ngeneral nconcepts n| nscientific
nmethodnMSC: n Conceptual
6. Which nof nthe nfollowing nmetric nrelationships nis nincorrect?
A) 1 nmicroliter n= n10–6 nliters
B) 1 ngram n= n103 nkilograms
C) 103 nmilliliters n= n1 nliter
D) 1 ngram n= n102
ncentigrams
E) 10 ndecimeters n= n1
nmeter
ANS: n B DIF: Easy REF: 1.3
KEY: n Chemistry n| ngeneral nchemistry n| ngeneral nconcepts n| nmeasurement n| nSI nunit
n| nprefixesnMSC: n Quantitative
7. For nwhich npair nis nthe nSI nprefix nnot nmatched ncorrectly nwith nits nmeaning?
A)
B)
C)
D)
E)
ANS: n C DIF: Easy REF: 1.3
KEY: n Chemistry n| ngeneral nchemistry n| ngeneral nconcepts n| nmeasurement n| nSI nunit
n| nprefixesnMSC: n Conceptual
8. A nmetric nunit nfor nlength nis
A) gram
B) milliliter
C) yard
D) kilometer
E) pound
ANS: n D DIF: Easy REF: 1.3
KEY: n Chemistry n| ngeneral nchemistry n| ngeneral nconcepts n| nmeasurement n| nSI nunit n|
nbase nunitnMSC: n Conceptual
9. Which nof nthe nfollowing nis nnot na nunit nin nthe nSI nsystem?
A) ampere
B) candela
C) Kelvin
D) meter
E) calorie
ANS: n E DIF: Easy REF: 1.3
KEY: n Chemistry n| ngeneral nchemistry n| ngeneral nconcepts n| nmeasurement n| nSI nunit n|
nbase nunitnMSC: n Conceptual
10. Order nthe nfour nmetric nprefixes nfrom nsmallest nto nlargest.
, A) nano- n< nmilli- n< ncenti- n<
nkilo-
B) milli- n< nnano- n< ncenti- n<
nkilo-
C) kilo- n< ncenti- n< nnano- n<
nmilli-
D) kilo- n< ncenti- n< nmilli- n<
nnano-
E) centi- n< nnano- n< nkilo- n<
nmilli-
ANS: n A DIF: Easy REF: 1.3
KEY: n Chemistry n| ngeneral nchemistry n| ngeneral nconcepts n| nmeasurement n| nSI nunit
n| nprefixesnMSC: n Conceptual
11. 8.1 nkilogram(s) ncontains nthis nmany ngrams.
A) 2
8.1 n n10
B) 3
8.1 n n10
C) 81
D) 0.81
E) 8.1 n
3
n10
ANS: n B DIF: Easy REF: 1.3
KEY: n Chemistry n| ngeneral nchemistry n| ngeneral nconcepts n| nmeasurement n| nSI nunit
n| nmassnMSC: n Conceptual
12. Convert n0.3980 nm nto nmm.
A)
B)
C)
D)
E)
ANS: n A DIF: Easy REF: 1.3
KEY: n Chemistry n| ngeneral nchemistry n| ngeneral nconcepts n| nmeasurement n| nSI nunit
n| nprefixesnMSC: n Conceptual
13. 6.1 nseconds ncontain nthis nmany npicoseconds.
A) 6.1 n n1012
B) 6.1 n
12
n10
C) 6.1 n
9
n10
D) 6.1 n n109
E) 6.1 n n1015
ANS: n A DIF: Easy REF: 1.3
KEY: n Chemistry n| ngeneral nchemistry n| ngeneral nconcepts n| nmeasurement n| nSI nunit
n| nprefixesnMSC: n Conceptual
14. 9.49 nseconds ncontain nthis nmany nnanoseconds.
A) 9.49 n 7
n10
B) 9.49 n 9
n10