,This45book45is45a45gift45that45we45hope45would45be45of45help45to45our45family45at45STEM.
Sincerely,
STEM45Freelancer’s45association
Chapter451:45Chemical45Foundations
1. Which45of45the45following45is45an45example45of45a45quantitative45observation?
A) The45piece45of45metal45is45longer45than45the45piece45of45woo
d.
B) Solution45145is45much45darker45than45solution452.
C) The45liquid45in45beaker45A45is45blue.
D) The45temperature45of45the45liquid45is4560°C.
E) At45least45two45of45the45above45(A-
D)45are45quantitative45observations.
ANS:4 5 D DIF: Easy REF: 1.2
KEY:4 5 Chemistry45|45general45chemistry45|45general45concepts45|45scienti
fic45method45MSC:4 5 Conceptual
2. A45quantitative45observation
A) contains45a45number45and45a45unit
B) does45not45contain45a45number
C) always45makes45a45comparison
D) must45be45obtained45through45experimenta
tion
E) is45none45of45these
ANS:4 5 A DIF: Easy REF: 1.2
KEY:4 5 Chemistry45|45general45chemistry45|45general45concepts45|45scienti
fic45method45MSC:4 5 Conceptual
3. Generally,45observed45behavior45that45can45be45formulated45into45a45statemen
t,45sometimes45mathematical45in45nature,45is45called45a(n)
A) observation
B) measurement
C) theory
D) natural45law
E) experiment
ANS:4 5 D DIF: Easy REF: 1.2
KEY:4 5 Chemistry45|45general45chemistry45|45general45concepts45|45scienti
fic45method45MSC:4 5 Conceptual
4. The45statement45“The45total45mass45of45materials45is45not45affected45by45a45chemical
45change45in45those45materials”45is45called45a(n)
A) observation
B) measurement
C) theory
D) natural45law
E) experiment
ANS:4 5 D DIF: Easy REF: 1.2
KEY:4 5 Chemistry45|45general45chemistry45|45general45concepts45|45scienti
fic45method45MSC:4 5 Conceptual
,5. A45chemical45theory45that45has45been45known45for45a45long45time45becomes45a45law.
, ANS:4 5 F DIF: Easy REF: 1.2
KEY:4 5 Chemistry45|45general45chemistry45|45general45concepts45|45scienti
fic45method45MSC:4 5 Conceptual
6. Which45of45the45following45metric45relationships45is45incorrect?
A) 145microliter45=4510–
6
45liters
B) 145gram45=4510345kilogra
ms
C) 10345milliliters45=45145liter
D) 145gram45=4510245centigr
ams
E) 1045decimeters45=45145m
eter
ANS:4 5 B DIF: Easy REF: 1.3
KEY:4 5 Chemistry45|45general45chemistry45|45general45concepts45|45measurement45|45SI4
5unit45|45prefixes45MSC:4 5 Quantitative
7. For45which45pair45is45the45SI45prefix45not45matched45correctly45with45its45meaning?
A)
B)
C)
D)
E)
ANS:4 5 C DIF: Easy REF: 1.3
KEY:4 5 Chemistry45|45general45chemistry45|45general45concepts45|45measurement45|45SI4
5unit45|45prefixes45MSC:4 5 Conceptual
8. A45metric45unit45for45length45is
A) gram
B) milliliter
C) yard
D) kilometer
E) pound
ANS:4 5 D DIF: Easy REF: 1.3
KEY:4 5 Chemistry45|45general45chemistry45|45general45concepts45|45measurement45|45SI45uni
t45|45base45unit45MSC:4 5 Conceptual
9. Which45of45the45following45is45not45a45unit45in45the45SI45system?
A) ampere
B) candela
C) Kelvin
D) meter
E) calorie
ANS:4 5 E DIF: Easy REF: 1.3
KEY:4 5 Chemistry45|45general45chemistry45|45general45concepts45|45measurement45|45SI45uni
t45|45base45unit45MSC:4 5 Conceptual
10. Order45the45four45metric45prefixes45from45smallest45to45largest.