26
,This26book26is26a26gift26that26we26hope26would26be26of26help26to26our26family26at26STEM.
Sincerely,
STEM26Freelancer’s26association
,Chapter261:26Chemical26Foundations
1. Which26of26the26following26is26an26example26of26a26quantitative26observation?
A) The26piece26of26metal26is26longer26than26the26piece26of26wood.
B) Solution26126is26much26darker26than26solution262.
C) The26liquid26in26beaker26A26is26blue.
D) The26temperature26of26the26liquid26is2660°C.
E) At26least26two26of26the26above26(A-
D)26are26quantitative26observations.
ANS:2 6 2 6 D DIF: Easy REF: 1.2
KEY:2 6 Chemistry26|26general26chemistry26|26general26concepts26|26scientific26
method26MSC:2 6 Conceptual
2. A26quantitative26observation
A) contains26a26number26and26a26unit
B) does26not26contain26a26number
C) always26makes26a26comparison
D) must26be26obtained26through26experimentati
on
E) is26none26of26these
ANS:2 6 2 6 A DIF: Easy REF: 1.2
KEY:2 6 Chemistry26|26general26chemistry26|26general26concepts26|26scientific26
method26MSC:2 6 Conceptual
3. Generally,26observed26behavior26that26can26be26formulated26into26a26statement,26so
metimes26mathematical26in26nature,26is26called26a(n)
A) observation
B) measurement
C) theory
D) natural26law
E) experiment
ANS:2 6 2 6 D DIF: Easy REF: 1.2
KEY:2 6 Chemistry26|26general26chemistry26|26general26concepts26|26scientific26
method26MSC:2 6 Conceptual
4. The26statement26―The26total26mass26of26materials26is26not26affected26by26a26chemical26chan
ge26in26those26materials‖26is26called26a(n)
A) observation
B) measurement
C) theory
D) natural26law
E) experiment
ANS:2 6 2 6 D DIF: Easy REF: 1.2
KEY:2 6 Chemistry26|26general26chemistry26|26general26concepts26|26scientific26
method26MSC:2 6 Conceptual
5. A26chemical26theory26that26has26been26known26for26a26long26time26becomes26a26law.
, ANS:2 6 2 6 F DIF: Easy REF: 1.2
KEY:2 6 Chemistry26|26general26chemistry26|26general26concepts26|26scientific26
method26MSC:2 6 Conceptual
6. Which26of26the26following26metric26relationships26is26incorrect?
A) 126microliter26=2610–
6
26liters
B) 126gram26=2610326kilogra
ms
3
C) 10 26milliliters26=26126li
ter
D) 126gram26=2610226centigra
ms
E) 1026decimeters26=26126m
eter
ANS:2 6 2 6 B DIF: Easy REF: 1.3
KEY:2 6 Chemistry26|26general26chemistry26|26general26concepts26|26measurement26|26SI26unit26
|26prefixes26MSC:2 6 Quantitative
7. For26which26pair26is26the26SI26prefix26not26matched26correctly26with26its26meaning?
A)
B)
C)
D)
E)
ANS:2 6 2 6 C DIF: Easy REF: 1.3
KEY:2 6 Chemistry26|26general26chemistry26|26general26concepts26|26measurement26|26SI26unit26
|26prefixes26MSC:2 6 Conceptual
8. A26metric26unit26for26length26is
A) gram
B) milliliter
C) yard
D) kilometer
E) pound
ANS:2 6 2 6 D DIF: Easy REF: 1.3
KEY:2 6 Chemistry26|26general26chemistry26|26general26concepts26|26measurement26|26SI26unit26
|26base26unit26MSC:2 6 Conceptual
9. Which26of26the26following26is26not26a26unit26in26the26SI26system?
A) ampere
B) candela
C) Kelvin
D) meter
E) calorie
ANS:2 6 2 6 E DIF: Easy REF: 1.3
KEY:2 6 Chemistry26|26general26chemistry26|26general26concepts26|26measurement26|26SI26unit26
|26base26unit26MSC:2 6 Conceptual
10. Order26the26four26metric26prefixes26from26smallest26to26largest.